Depends on the potential possibilities of the existing equipment and timely modernization while maintaining the existing components. Most often, additional investments on the content of the device are spent on the purchase, which allows to ensure the speed of the server and is one of the most important necessary for the stable operation of any server. The total amount of memory is selected depending on the tasks that it is planned to be solved. Now the distributed standard of DDR3 memory is gradually displaced by DDR4, which has a greater bandwidth and reduced voltage indicator. RAM HP. It is characterized by a high speed of work and large volume. Such a desktop definition, as "reliability", is more often replaced by the term "fault tolerance", which more fully reflects the meaning. As hP memory for It must be non-stop working all the time since its commissioning, it uses much more stringent checks than for desktop products. For example, the method of "artificial aging" is used - when testing the memory modules are strongly heated, which literally in a couple of days to lead them into a state that corresponds to two months of non-stop exploitation. This allows you to reveal the production flaws as quickly as possible. RAM HPTo buy which you can with us are equipped with the Error Correcting Code feature. It makes it possible to automatically find and correct errors that appear during operation. Problems in memory negatively act on the overall performance of the equipment and can lead to the most undesirable consequences, up to complete data loss. However, the ECC function, despite its utility, does not guarantee full protection, but corrects only random errors, thus reducing the risk of problems in the operation of the server. RAM HP, the price of which is fully justified, is characterized by increased resistance to various networks and software failures. Many models are additionally equipped with built-in temperature and voltage sensors, as well as pulse meters and radiators. Special controller that can be supplied server memory HP. will not allow the system freezing to go unnoticed. Memory DDR4 HP SmartMemory. Provides bandwidth to 2133 mt / s (depends on the installed processor model), which is 14% more compared to DDR3 memory. In addition, the register modules of the DIMM memory (RDIMM) in HP DDR4 SmartMemory. Demonstrate a higher level of performance at a voltage of 1.2 V, which reduces power consumption to 35% compared with DIMM DDR3-1866 modules, operating from the voltage of 1.5 V. MEMORY DIMM HP SmartMemory Modules with reduced load (LR-DIMM) reduce Electrical load on the memory controller, which allows the use of a larger memory in the configuration with three DIMM modules per channel. HP ADVANCED Memory Error Detection technology allows you to detect defects in memory cells, which either lead to a significant reduction in performance, or significantly increase the likelihood of an incorrigible (unstore) memory error. Due to the more efficient prediction of memory events this technology Allows you to prevent unnecessary replacement of DIMM memory modules and increases the uninterrupted operation of the servers. Gen9 are equipped with the following advanced memory protection features:

• improved Error correction ECC / SDDC - ensuring continuous memory operation in the event of a single memory device fail. This feature allows you to exclude one DRAM memory module from the memory card in case of the manifestation of the failure, and restore the data from this module on the new module. Support versions X4 and X8 SDDC controller
• SMART Socket 9 Elevator
• Rank Sparring (Online Spare) - dynamic switching in case of a failure of a DIMM backup bank or a backup pair of banks in the same memory controller. At the same time, OS in this process does not participate in any way. HP offers rank backups instead of DIMM memory modules, because when reservation of ranks, a smaller memory is used and the redundancy rate below
• erasing on request writes a fixed data back to memory after recognizing the correct error during reading operation
• memory Patrol - Preventive Error Search in System Memory and Correction of those that can be eliminated. Functions of patrol and cleaning of memory prevent the corrected error accumulation and reduce the likelihood of unplanned downtime.
• insulation of defective DIMM modules - detecting a DIMM failure pair. Simplifies diagnostics and subsequent repair, localizing an error. With the error corrected, a specific DIMM failure module is defined; When incorrigible - a pair of DIMM modules
• thermal memory control is used to prevent overheating of the DIMM memory modules. If necessary, the speed of access to memory is reduced. The temperature is controlled using the temperature sensors to DIMM
• protection using parity control / DIMM control bus - Technology of detection and protection against errors in commands and addresses.

This time it will be discussed about HP products. All these problems were solved by our engineers, and this is only a small part of surprises that can prevent the servers of this vendor. However, if you are independently engaged in server service, then perhaps our experience can come in handy.

RAM

When upgrading HP servers (and not only), difficulties often arise with the selection of RAM. As practice shows, even experienced sysadmins and engineers are not always knowledgeable in this matter. If you install the memory modules on the whole, then most likely the server will simply not start. For incorrect configuration RAM is possible and a softer option: the machine works, but not with maximum performance.

For multiprocessor HP servers, as a rule, it is necessary to use only register memory with error correction feature (ECC RDIMM), and for single-processor - non-buffered with ECC (UDIMM). Although official manuals say that UDIMM can also be put in multiprocessor servers, it is not worth doing this for several reasons:

1. Memory limit. As a rule, it is 24-32 GB on the CPU.
2. The UDIMM strips, as a rule, should be "native" HP, otherwise spontaneous reboots of the server can occur. This phenomenon is fixed at least three models: DL380P Gen8, DL360E Gen8, ML310E Gen8v2. At the same time, you can easily install RDIMM memory of any vendor.

   The advantage of the UDIMM memory is that it works somewhat faster than RDIMM, in which there is a buffer operating delay. However, with proper configuration of memory in multichannel RDIMM systems, it can exceed non-buffered memory in performance. It is impossible to simultaneously install RDIMM and UDIMM modules.

   You can distinguish UDIMM memory from RDIMM by sticker. For example, if 12800 is written R., then this register memory if 12800 E., non-ebuperized with ECC.

   When installing RDIMM, one and two-time memory preference should be preferred (1RX4, 2RX4). Unlike the same IBM (Lenovo), HP servers are sensitive to memory configuration. When installing modules, it is recommended to uniformly distribute memory both between the server processors and between the channels. Otherwise, the server may simply not turn on, or its performance will be reduced. The voltage of the planks in HP servers is not fundamentally, but still try to install the same strip on the casting.

   Information about the optimal placement of the RAM in the DIMM slots is always under the server cover and in the official manual.

Please note that HP servers to Gen9 do not support DDR4 memory. Therefore, first specify which memory is compatible with your model. You can use the proper configuration to select the correct configuration.

When it comes to upgrade or repairing servers, there is an eternal question about the manufacturer of components. Someone uses exclusively original components, no expense, and someone selects compatible components from third-party manufacturers. We believe that here you need to consider:

• The degree of compatibility of third-party components.
• The cost difference compared to the original.
• Information about the reliability of third-party components.
• Level and permissibility of risks when using third-party components.

In HP servers, you can use memory without fears. different manufacturers. The main thing is that the modules have the same technical parameters. For example, if several 4GB 1RX4 PC3L-10600R modules have already been installed in the server, you need to build up using memory with the same parameters. And the manufacturer can be any.

Drives

When you select new drives for the server, it is more difficult to make a mistake than when changing the memory configuration. But still there is their pitfalls and, in part, myths.

There is an opinion that for HP servers you need to buy drives exclusively the same manufacturer. This is justified by the fact that all drives with HP logo have branded firmware. In this case, "native" discs are essential. And honestly, speaking, this is a dubious pleasure to overpay at 2-2.5 times. However, the Hewlett-Packard Corporation itself does not produce drives, it orders them from other vendors. And as experience shows, in many models of HP servers, you can use HGST, Toshiba, Seagate, Western Digital products.

When you select drives, check which drives support the RAID controller of your server. Some controllers do not support SAS-acquisitions, the drives of more than 2-3 TB are also not supported.

If the server does not sees a third-party drive when it is connected, it is most often due to the malfunction of the drive itself or the RAID controller. Another important detail: in no case do not put discs for desktop systems in the Enterprise servers. Judging by our experience, you can select several of the most popular models of "non-rigging" disks that will work without problems on servers from G7 to Gen9:

• Seagate Savvio (SAS)
• Seagate Constellation (SATA / SAS)
• Seagate Enterprise Capacity (SATA / SAS)
  • Seagate Enterprise Performance (SATA)
  • WD VelociRaptor (SATA)

Processors

When replacing processors to more powerful, it is necessary to find out in the server specification, which processor models it supports. Do not forget to consider the supported TDP radiator and the CPU itself. In most cases, it helps to avoid possible problems.

However, when increasing the number of processors, in no case cannot be neglected by installing coolers for each of them, relying on the air conditioning of the server room. Each fan cools certain zones on the motherboard. Without standard cooling, the risk of temporary overheating of processors and RAM is repeatedly increasing, up to the server output due to melting or burnout electronic components.

After installation in the server of two processors, it may not turn on the order of more powerful than one stock. For example, in our case it was with the HP ML350P Gen8 server. The reason is that some models on the motherboard have a fuse blocking power supply if the required voltage exceeds a certain base threshold. If this blocking is triggered, then only replacement remains the only option. motherboard. If the server is not on warranty, it can fly into a penny, as HP is famous for its rather than its glands.

However, there is a method for bypassing this protection. Suppose, instead of one or two initial-level processors E5-2609 (V1 / V2 / V3), you need to install two productive E5-2690 (V1 / V2 / V3). To avoid problems in the upgrade best to do this:

1. Update everything to recent versions (ILO, BIOS, AHS, etc.)
2. Wait for full server initialization with both E5-2609 installed.
3. Install the two "intermediate" level processors, for example, E5-2640. Wait to end the post check.
4. And only after that set the desired E5-2690.

Do not forget that all Firmware must be recent versions.

Intelligent Provisioning and server update

The HP ProLiant Gen8 and Gen9 servers use a powerful Intelligent Provisioning tool, which allows you to configure the server, update the firmware of some components and control the "iron" part of the machine. Sometimes when you try to update, an error is issued about the impossibility of connecting to the HP database. The reason is the outdated version of the Intelligent Provisioning itself. You can refresh it as follows:

1. For Gen8, download the image of Intelligent Provisioning Recovery Media version 1.62b, and for Gen9 is the latest version.
2. Mount the image using ILO or record on CD / DVD. Do not record the image on the USB flash drive, when you start with it, Intelligent Provisioning will not be updated.
3. When you boot the server, select the One Time Boot to CD-ROM option.
4. When the server boots from a disk (or image), then in the case of Gen9, select Interactive HP Intelligent Provisioning Recovery Media. On the Gen8 server, the update will start automatically.
5. On the next screen, click the Reinstall Intelligent Provisioning button, wait for the completion and reboot again (only for Gen9).

Many Gen8 and 9 generation servers owners are trying using Intelligent Provisioning to update the BIOS. But this tool allows you to update only ILO firmware, network card (Ethernet) and in some cases - RAID controller.

There are two options full upgrade Server.

1. Manually download and install everything required drivers and firmware for your server model. This option is convenient if the server is one and on it already eating OS.
2. If the servers are somewhat and add Windows to them, then it is more expedient to use the Service Pack for Proliant (SPP) service pack.
   • You need to download an image of a service pack.
   • Install HP USB Key Utility for Windows.
   • With this program, we deploy the image of the service pack on the flash drive with a volume of at least 8 GB.
   • We download the server from the flash drive. We recommend selecting Interactive Firmware Update, you can control the update process.
   • After downloading the client, select Update Firmware. When the equipment is checked, the system will propose a list of updates to be installed after pressing the Deploy button.
   • After completing the update, you must reboot. The server will turn on and turn off several times, installing the firmware, after which the standard load will occur.

Network adapters are not defined

If you update the EMULEX drivers for network adapters from version 3.x.x at once to version 10.x.x, then when rebooting network adapters can cease to be determined. To prevent this problem, it is recommended to first install Emulex 4.x.x, and then the latest version. You can avoid this error otherwise: first updated with the image ONECONNECT, and then with Service Pack for Proliant. And if the adapters have already ceased to be determined, then simply update from the image of ONECONNECT.

"Feature" of HP DL360P Gen8 servers

Initially, the model of this series was calculated on the processors of the E5-26XX of the first revision, but in 2013 Intel released the second iteration - V2. Vendors, including HP, began to update the rules. Dell and IBM did not become engineeringly changing the base, only motherboards began to wear another part number. And in HP went to another way. As a result, there are two HP DL360P models on the market, no different, except for fasteners of radiators. In the first version, the fastening is lever, in the second - screw.

In essence, a little thing. However, it can bring to additional costs. Therefore, if you decide to install a second processor, be sure to find out the revision of your server (according to a serial, or looking under the cover).
Pattern number of the old lever radiator - 654770-B21.
Pattern number of the new screw radiator - 712731-B21.

Insufficient number of power supplies

Some HP Server Owners with X4-Backplains backup power (RPS), for example, ML350 Gen9, are perplexed why it takes no less than three power supplies to start the machine, whose total power significantly exceeds the maximum current server consumption.

The fact is that in the ML350 Gen9, up to 9 PCI-E cards and up to 6 HDD-backelins (either, for example, internal streamer + 5 HDD-backplains) can be installed. And all this can consume a lot of watts. RPS bacplains allow you to provide excessive server power in case of a sharp increase in the load, and therefore energy consumption. Connecting power supplies to the beckplane is carried out according to the N-1 scheme, where n is the total number of connector. If you need redundant server power, then the power supply units must be connected to all bayplane connectors. If redundant power is required, then three power supplies are needed to start a server with x4-booplain, and one block with X2-backplane.

IPMI management error

IPMI can be used for remote control servers. There may be situations when it fails to establish a connection to the server IPMI service:

IPMITOOL -I LANPLUS -H $ ip -u $ User -p $ Pass
Error: Unable to Establish IPMI V2 / RMCP + SESSION

There may be two reasons:

This problem is rare, and is expressed in a chaotic self reboot server. There are no error logs, ILO logs are also usually nothing critical. In such situations, the software update is usually not helped, the replacement of power cables and the UPS. The problem is solved by changing power management settings in the server bios. Briefly, all mechanisms for reducing the processor clock frequency are disconnected:

• Power Management Options -\u003e HP Power Profile -\u003e Maximum Performance
• Power Management Options -\u003e HP Power Regulator -\u003e HP Static High Performance Mode
• Power Management Options -\u003e Advanced Power Management Options -\u003e Collaborative Power Control -\u003e Disabled
• Power Management Options -\u003e Advanced Power Management Options -\u003e Minimum Processor Idle Power Core State -\u003e No C-States
• Power Management Options -\u003e Advanced Power Management Options -\u003e Minimum Processor IDle Power Package State -\u003e No Package State

Failure after turning off the server

We faced several cases when the LEDs are turned on when the server is turned on, but there is no video signal. The machine is not ping, ILO does not respond, although the ILO and Ethernet activity is marked in LEDs. Keyboard and mouse do not work. Most often, this happened after the standard shutdown of the server, without any manipulations, without power failures. Such a failure was noted on generation servers from Gen5 to Gen8.

The exact solution to this problem, like its reasons, cannot be detected. In one case, the translation of all System Maintenance Switch switches to the ON position was helped, and after some time back to OFF. Once the server came to life after the memory modules changed places. Unfortunately, in several cases, it was not possible to restore servers.

Cooling system strong noise

This problem is most often manifested in the ML350E Gen8 servers. Immediately after turning on the server, the fans go to high speed. The speed of rotation is not reduced at any load. As a result, a constant and high noise level is created.

In some cases, the problem was solved by removing PCI-E cards of expansion: network and USB hubs. But this problem has met both servers without expansion boards. Dismantling and re-installation All fans and their baskets, with reconnecting power wires. Once the fans returned to normal turnover after updating firmware and reset ILO. There was also a case when the cooling control setting was changed in BIOS, and it turned out to be enough to change the value with increased on Optimal Cooling.

Reset configuration in Gen8 servers

Finally, we want to tell not about the error, but about the Face of the HP generation servers Gen8 and Gen9: there are no familiar jumpers for resetting the configuration on motherboards. If you need to take advantage of the discharge, this can be done as follows:

Installing the second raid controller in Gen8 and Gen9 servers

When installing the second raid controller (for example, one raid under the system, the second under the data), the server may freeze at the OS load stage or not pass POST. Most often, this is due to the wrong boot-queue.

To solve the problem, you need to make the following configuration:

• Raid1 (for example, built-in P420i).
• Raid2 (software or embedded raid, for example B120i, P222i).
• Raid3 (hardware P420).

Advantages of HP servers

It would be unfair to tell only about the problems of HP servers, because no wonder the products of this manufacturer are highly popular. The servers of the Proliant series are considered one of the best in their class, and certainly will be remembered by their reliability than the ILO fenced out and a somewhat overestimated price. It is HP that often asks the bar in the functionality and fault tolerance of the servers, offering non-standard, but effective engineering solutions.

Here are just a few advantages of HP servers:

• Ease of use Thanks to branded phichams: ILO, Intelligent Provisioning, Active Health System.
• Successful line of budget and high-performance models.
• The limited nomenclature of "iron" (although for someone it is a flaw) for each model avoids of irrational costs for the future upgrade.
• Excellent technical support.
• One of the best implementations of the update of the built-in software.
• In Gen8 and Gen9 - the best implementation of diagnostic designations on sleds under HDD.

If you come across any errors in HP servers, but ultimately won, then share in the comments. Thank you.

RAM largely affects the performance of the server, so the question of selecting memory modules requires a thorough approach when the server system configuration is selected. The HP RAM meets all modern technological standards and is able to provide high data processing speed for the most highly loaded environments.

Modern RAM types

• DDR2. This standard It is used mainly in working desktop computers and budget entry-level servers. However, the DDR2 memory demonstrates twice as much capacity compared to the previous generation of DDR due to the increased clock frequency. In addition, the memory has a lower level of energy consumption and good cooling;
• DDR3. New standard DDR3 came to the DDR2 shift in higher-class solutions. IN this type The memory applies the most modern data processing algorithms, which gives a significant performance gain. Power consumption of modules DDR3 is below 30% compared to DDR2, and bandwidth Above and amounts to 21,300 MB / s. Note that the DDR3 memory is back compatible with DDR2 modules, but not vice versa.

Server User Guide

HP PROLIANT DL380P GEN8

Memory options

Important: This server does not support simultaneously LRDIMMS, RDIMMS, UDIMMS, or HDIMMS.

An attempt to mix any combination of these DIMM modules can cause server stop during BIOS initialization. The memory subsystem in this server can support LRDIMMS, RDIMM, UDIMM or HDIMMS modules:

• UDIMM modules represent the most basic types of memory modules and offer smaller latency in one DIMM to the channel configuration and (relative) low power consumption, but are limited in power.
• RDIMM modules are more capacious than UDIMM modules and include the reliability of the address.
• LRDIMMS supports higher density than single and two-channel RDIMM modules and higher speeds than four-channel RDIMM modules. This support allows, in the potential, to set a higher DIMM density, which leads to an increase in the possibility of the system and high throughput.
• HDIMMS provides higher speed than other DIMM. 12 DIMM modules are required for each processor with HDIMMS.

All types are called DIMM when information concerns all types. When specifying as LRDIMM, RDIMM, UDIMM, or HDIMM, information refers to this type. All memory installed on the server must be one type. The server supports the following DIMM speeds:

• Single and Dual-Rank PC3-10600 (DDR3-1333) RDIMMS works at a speed of up to 1333 mt / s
• Single- and Dual-Rank PC3-12800 (DDR3-1600) RDIMMS works at a speed of up to 1600 mt / s
• Single- and Dual-Rank PC3-14900 (DDR3-1866) RDIMMS works at speeds up to 1866 MT / S
• Single and Dual-Rank PC3-10600 (DDR3-1333) UDIMMS works at speeds up to 1333 mt / s
• QUAD-RANK PC3L-10600 (DDR3-1333) LRDIMMS, works like two-channel DIMMS, to 1333 MT / S
• QUAD-RANK PC3L-14900 (DDR3-1866) LRDIMMS works as two-channel DIMMS up to 1866 mt / s.

For the latest memory configuration information, see the brief specifications in the HP product bulletin on the site (http://www.hp.com/go/productbulletin).

Hp SmartMemory.

HP SmartMemory entered for Gen8 servers conducts authentication and opens certain capabilities available only for Qualified HP Memory and checks whether the memory has been installed that passed the Qualification and HP testing process. Productive qualified memory configured for HP Proliant and BladeSystem servers have trends to future enhanced HP support via HP Active Health and managed software. Some performance features are unique with HP SmartMemory. HP SmartMemory 1.35 in DDR3-1333 Memory is designed to achieve the same level of performance, as in 1.5 in memory. For example, while the industry supports DDR3-1333 RDIMM by 1.5 V, this server Gen8 supports DDR3-1333 RDIMM to 3 DIMM modules per channel in 1066 mt / s and operates on a voltage of 1.35 V. This, accordingly, Consumes up to 20% less energy at the DIMM level without fine performance. In addition, the industry supports UDIMM in 2 DIMM modules per channel in 1066 mt / s. HP SmartMemory supports 2 DIMM on a channel at a speed of 1333 mt / s, or 25% of a large bandwidth.

Memory subsystem architecture

The memory management subsystem in this server is divided into channels. Each processor supports up to four channels, and each channel supports three DIMM slots, as shown in the following table.

Location of cell numbers, see "Dimm Slots" section. This multichannel architecture provides increased performance In an extended ECC mode. This architecture also includes Lockstep and Online Spare Memory. DIMM in this server is identified by the number and spelled. Letters indicate the order of location. Slot numbers indicate the identifier of the DIMM slot identifier for replacement.

One-, two- and four-channel DIMM

To understand and configure memory protection modes properly, it is necessary to understand the work of one-, two and four-channel DIMM. Some DIMM configuration requirements are based on these classifications. The single-channel DIMM has one memory chipset, which is accessed when recording or reading from memory. The DIMM two-channel module is similar to two single-channel DIMM modules, only with one rank and access to the same module simultaneously. The four-channel DIMM is, in fact, two two-channel DIMM modules per and the same module. Only one level available at the same time. The server memory management subsystem selects the appropriate rank in the DIMM memory when recording or reading from the DIMM memory. The two- and four-channel DIMM provide the highest power using existing memory technologies. For example, if for the current DRAM technology, up to 8 GB of single-channel DIMM modules are supported, then for two-channel DIMM 16 GB, and four-channel Dimm would be 32 GB. LRDIMM modules are marked as four-channel DIMM, but they function more as two-channel DIMM modules. There are four rows of DRAM DIMM memory modules, but the LRDIMM buffer creates an abstraction that allows DIMM to appear as a two-channel DIMM in the system. In the LRDIMM buffer also isolates the electrical load of the DRAM from the system, allowing you to speed up the work. These two changes allow the system to maintain up to three LRDIMM modules per memory channel, providing 50% greater memory capacity and above, as well as the speed of RAM compared to the four-channel RDIMM.

Dimm identification

To determine the DIMM characteristics, use the labels attached to the DIMM, as well as the drawings and the table below.

For information about the latest supported memory, see QUickSpecs on the HP website (http://h18000.www1.hp.com/products/quickspecs/productbulletin.html). On the site, select the geographic region and find the product by name or product category.

Memory configurations

To optimize the server availability, the server supports the following AMP modes:

• Advanced ECC - provides up to 4 bits of error correction and performance improvement in Lockstep mode.

This mode is applied by default for this server.

• Online Spare Memory - Provides protection against errors or degraded DIMM. Certain memory is used as a spare, and occurs automatic switching Memory when the system detects that some dimm is spoiled. This allows you to derive the DIMM from exploitation, which have a higher probability of obtaining a faint error (which would lead as a result, to a base system).

Advanced memory protection parameters are configured in RBSU. If the requested AMP mode is not supported by the configuration DIMM module, then the server is loaded in Advanced ECC mode. For getting for more information See "HP Rom-Based Setup Utility". The server can also operate in independent channel mode or in the combined channel mode (LockStep). When running Lockstep, you get reliability in one of two ways:

• When operating with UDIMM (built with X8 DRAM devices), the system cannot fully survive due to insufficiency DRAM (SDDC). In independent channel mode, this failure will lead to an unreasonable error.
• When working with RDIMM (built with X4 DRAM devices), the system can survive the full failure of two DRAM devices (DDDC). When starting B. offline modeThe server can only survive the complete failure of one DRAM device (SDDC).

Maximum capacity

		One processor	Two processors
	One-ranking
	Two-ranng
	Four-ranking
	One-ranking
	One-ranking
	Two-ranng

Extended ECC Memory Configuration

Extended ECC memory is the default mode to protect the memory of this server. ECC standard can fix one-bit errors and detect multi-bit memory errors. When multi-bit errors detected using standard ECC are detected, the server error and the server stops. Extended ECC protects the server from some multi-bit memory errors. Expanded ECC can fix one-bit and 4-bit memory errors, if not all bits are on one DRAM device to DIMM. Expanded ECC provides additional protection compared to standard ECC, because it is possible to correct some memory errors, which, otherwise, will not be corrected and as a result there will be a crash on the server. Using the HP Advanced memory error detection technology, the server provides a notification when DIMM degrades and has a high probability of incorrigible memory errors.

Configuration Online Spare Memory

Online memory redundancy provides protection against degraded DIMM, reducing the likelihood of a defective memory error. This defense is provided without any support. operating system. Online Spare Memory Protection sends one rank for each memory channel to use as a spare memory. The remaining rows are available for OS and applications. If the correction of memory errors occurs at higher rates than a specific threshold value on any spare rows, the server automatically copies the contents of degraded memory into spare rows. The server then disables the failed memory rank and automatically switches to the online spare.

Memory configuration Lockstep

Lockstep mode provides protection from multi-digit memory errors that occur on the same DRAM device. Lockstep mode can fix any separate DRAM device failure on X4 and X8 DIMM types. Dimm modules in each channel must have the same HP party number.

General Principles of Filling Dimm Slots

• install the DIMM modules only if the appropriate processor is installed;
• when installing two processors, balance the DIMM modules across two processors;
• white DIMM slots indicate the first slot of the channel (CH 1-A, CH 2-B, CH 3-C, CH 4-D);
• do not mix LRDIMM modules UDIMM, RDIMM or HDIMM;
• do not install more than two UDIMM modules per channel;
• uDIMM modules should not be installed in SH 1-I, CH 2-J, CH 3-k, or CH 4-L;
• HDIMM will need 12 DIMM modules per processor;
• when installing two processors, set the DIMM modules in the order of alphabetical sequence, for balancing between two processors: P1-A, P2-A, P1-B, P2-B, P1-C, P2-C and so on.

To detail the Rules and Recommendations for Memory Configuration, you can use the Online DDR3 Memory Configuration Tool on the HP website (http://www.hp.com/go/ddr3memory-configurator). What speed support DIMM is shown in the following table.

Expanded ECC Placement Guidelines

For configurations, in Advanced ECC mode, follow these rules:

• dimm modules can be installed individually.

ONLINE SPARE memory

For configuration in online memory mode, follow these rules:

• follow the guidelines in the DIMM location in slots;
• each channel must have a valid Online Spare configuration;
• each channel may have a different actual spare configuration online;
• each filled channel should have a spare channel.

a) Single dual-channel DIMM is an invalid configuration; b) LrDimm is treated as a two-channel DIMM.

Principles of memory location in Lockstep mode

In the LockStep Memory Configuration mode, follow these recommendations:

• follow the guidelines in the DIMM location in slots;
• DIMM set to all channels, processors must be the same;
• in multiprocessor configurations, each processor must have a valid LockStep memory configuration;
• in multiprocessor configurations, each processor can have different allowable LockStep memory configurations.

Order of location

For configuration memory with one or more processors, fill out the DIMM slots in the following order:

• LRDIMM: consistently in alphabetical order (from A to L);
• Rdimm: consistently in alphabetical order (from A to L);
• UDIMM: from A to H, consistently, in alphabetical order, do not fill the Dimm i slots through L;
• HDIMM: All 12 DIMM modules on each processor must be filled.

After installing the DIMM modules, use RBSU, to configure Advanced ECC, Online Spare, or Lockstep.

Installing Dimm Modules

The server supports up to 24 DIMM modules. To install DIMM memory modules:

1. Turn off the server;

2. Disconnect the power:

a) Disconnect each power cord from the power supply;

b) Disconnect each power cord from the server;

3. Extend the server from the rack;

4. Remove the access panel;

5. Remove the air deflector;

6. Open the DIMM slot latches;

7. Install the DIMM memory module.

8. Install the Access Panel;

9. Install the server in the rack;

10. Connect each power cable to the server;

11. Connect each power cord to the power supply;

12. Enable the server.

Use RBSU ("HP Rom-Based Setup Utility") to configure the memory mode.

For more information about the indicators and troubleshooting of the DIMM modules, see "Combinations of the Integrated Display Indication".

Designation of components

Rear server componentsHP.PROLIANT.DL 380.p.Gen 8.

Server System Board ElementsHP.PROLIANT.DL 380.p.Gen 8.

Exploitation

Setting

Perform the upgrade of RAM (RAM) on the HP laptop to increase system performance. If you need to upgrade RAM, it is necessary to determine the type of memory installed in the computer, the maximum memory capacity supported by the computer, and the memory capacity supported by the operating system.

Search for a product code corresponding to HP laptop

Before ordering a new memory module, you must define the corresponding notebook product code for searching documents and technical characteristics For your model. Usually, this code is indicated on the sticker located on the bottom of the laptop, or on the box in which it comes. See how to find a model number or product code? For information on additional features.

Note.

The general name of the product family specified next to the keyboard or on the frame around the screen does not allow sufficient information to order spare components.

Search for the specifications of the installed memory (capacity, type, maximum supported capacity)

See the technical characteristics of a laptop or manual for care and maintenance to get information about installed memory. Go to HP Product Support Support Services Website for your computer model, then select Category Product Informationto go to the document with technical specifications, or select User's manual To view the care and maintenance manual. Or enter the product code in the "Search" field in the top area of \u200b\u200bthis page, insert the space and enter the words specifications or (example: RQ877AS Specifications).

In the care and maintenance manual See section Memory For information on the technical characteristics of the memory module, spare parts numbers for memory module, compatible processors and types of RAM, as well as the number of connectors for memory modules.

In the document with the technical characteristics of the laptop See section Memory For the following information.

Capacity of the installed memory: Check the current memory capacity installed on the computer, then go to the section in this document.

Maximum Supported Memory Capacity: To determine how much memory needs to be purchased, deduct the value of the capacitance of the installed memory from the value of the maximum supported container. You can also purchase memory with the maximum allowable container and replace the installed memory. Then go to the section Determining the maximum memory capacity supported by the Windows version In this document. Use the smallest of these two numeric values \u200b\u200bas the maximum memory capacity.

Memory type (including speed): For each HP connector, it is recommended to acquire the memory modules of the same type (with the same capacity, speed, as well as one manufacturer). For best performance It is recommended to use memory modules with a maximum speed of speed supported by the motherboard.

Attention!

Some motherboards do not support configuration of memory modules of various manufacturers, or memory modules with different CAS values \u200b\u200bor density. To ensure memory compatibility, you should use SO-DIMM modules with the same part numbers.

Determining the location of the memory installation in the laptop

The compartment for memory modules is located at the bottom of most HP and COMPAQ laptops. On some models of laptops, the compartment for memory modules is under the keyboard. In this case, HP recommends contacting an authorized HP service center to receive assistance on request and replacing RAM.

Check out the section Extraction and replacement in manual for care and maintenance for computer to get detailed instructions By defining the location of the compartment for memory modules. Care and maintenance guide available in category Product Information on the main page HP Product Support Services Website for your computer model. Or enter the product code in the "Search" field in the top area of \u200b\u200bthis page, insert the space and enter the words maintenance and maintenance manual (example: RQ877As care guide and maintenance).

Determination of the capacity of the memory

Check the capacitance of the installed memory to determine the capacity of the memory added on the on or off of the computer.

Check the capacity of the memory on the computer enabled

To test the memory capacity on the computer enabled, use the HP Support Assistant application.

Check the capacity of the memory on the off computer

To check the memory capacity on the computer turned off, open the compartment for memory modules.

Determining the maximum memory capacity supported by the Windows version

Determine the memory capacity supported by the version of Windows, which is installed on your HP laptop.

• Maximum memory capacity for Windows 10 versions

  Minimum memory requirements in Windows 10 - 1 GB of RAM (32-bit) or 2 GB of RAM (64-bit).

  Maximum memory capacity for versions of Windows 8

  Minimum memory requirements in Windows 8 - 1 GB of RAM (32-bit) or 2 GB of RAM (64-bit).

  Version Windows 8.	Maximum memory capacity for 32-bit versions (x86)	Maximum memory capacity for 64-bit versions (x64)
  Windows 8 corporate
  In Windows 8 Professional

• Maximum memory capacity for Windows 7 versions

  Minimum memory requirements in Windows 7 - 1 GB of RAM (32-bit) or 2 GB of RAM (64-bit). The maximum memory capacity depends on which version of Windows is set:

  Version Windows 7.	Maximum amount of addressable memory
  Starter (32-bit or 64-bit)
  Any 32-bit windows version 7 (except for the release of Starter)	4 GB (for use is about 3.3 GB)
  Home Basic, 64-bit
  Home Premium, 64-bit
  Enterprise, 64-bit
  BUSINESS, 64-bit
  Ultimate, 64-bit

Installing a new memory module

On most HP and COMPAQ laptops, the new memory module is installed through the memory module compartment at the bottom of the computer. Check out the following instructions to make sure that they are suitable for your computer. To find instructions for your computer model, see the user manual or enter the computer model number and the phrase memory replacement in the search field in the top area of \u200b\u200bthis page (for example: replacing RQ877AS memory).

Note.

If you are not sure that you can install yourself, contact an authorized HP service center for help. If the person or service, not authorized HP, perform the upgrade of RAM, the product warranty does not apply to any possible damage. The user assumes all risks and responsibility for damage related to the upgrade of memory.

Troubleshooting after installing new memory

If, after adding a memory, the computer does not start or Windows does not open, the audio signals are played or the indicators located next to the keys are blinking. Caps Lock. or Num Lock.Try following:

• Remove and re-install the new memory module.

  Remove the new memory module and clean the groove in the connector into which it is installed. Purify with compressed air through a thin nozzle using safety glasses to remove dust or debris.

  Remove the new memory module and try to start the computer. If the computer starts, check the correctness of the type and the compatibility of the capacity of the acquired memory module. For more information about choosing a suitable memory for purchase, see Sections Search for the specifications of the installed memory and Determination of the capacity of the memory In this document. Use the source memory module for reference.

  If possible, use the memory modules of the same manufacturer and with the same product code.

  If after that the restart of the computer is still not executed, remove the replaceable memory modules, set the source memory modules and check the ability to use the computer in the same configuration.

Check the types of memory modules and computers for HP computers

Check out information about memory modules and requirements for using HP computers.

SO-DIMM memory modules and requirements

IN laptops Small memory modules are used with a two-row conclusions (SO-DIMM). They are less and thinner than other DIMM modules, so used when there are restrictions on the place in the chassis. SO-DIMM modules for the HP computer must comply with the following requirements.

The number of contacts on the SO-DIMM module must match the connector type.

To install SO-DIMM modules, a 200-pin connector is required.

DDR2 SO-DIMM is incompatible with DDR1 DIMM and DDR2 DIMM memory modules.

DDR3 SO-DIMM is incompatible with DDR1 or DDR2 modules, and 204-pin connector is required to install them.

If the computer is used in the computer 533 MHz or 667 MHz bus, use the PC2-4200 memory (DDR2 DIMM 533 module).

DIMM memory modules and requirements

Memory modules with a two-row conclusions (DIMM) are small printed circuit boardswhere groups of memory chips are placed. They are used on most desktop computers. The DIMM modules have a wider connection path with two rows of contacts on each side, which provides a faster data transfer compared to modules with a single-row memory microcircuit (SIMM). DIMM modules can be released in one-sided or bilateral execution. DIMM modules can not be added pairwise and can be used with other DIMM modules with identical contact numbers. For example, a DIMM module with a capacity of 1 GB can be installed on a motherboard next to a 2 GB DIMM module.

Note.

The speed of the DIMM modules cannot be higher than the system tire frequency. If several DIMM modules are installed with different operating frequencies, the operating frequency of the entire memory set will be equal to the DIMM modulus operating frequency at the lowest speed.

DIMM Modules for HP Computer must comply with the following requirements.

The number of contacts on the DIMM module must match the connector type.

For memory DDR. 184-pin connector and operating voltage 2.5 V.

Memory DDR2. incompatible with DDR1 memory, and it requires a 240-pin connector, as well as the operating voltage of 1.8 V.

Memory DDR3 Provides bandwidth, roughly in excess of the bandwidth of DDR2.

Modules DDR3 incompatible with DDR1 or DDR2 memory.

To install modules DDR3 DIMM requires a 240-pin connector and an operating voltage of 1.5 V. The DDR3 memory connector is other than for DDR2 or DAR. Do not attempt to install the DDR3 memory module on the motherboard designed for DAR or DDR2. Otherwise, irreversible damage to the motherboard and DIMM modules is possible.

SCRAM (synchronous dynamic memory with arbitrary access): Use the DAR type SCRAM memory only if the computer comes with DDR-SDRAM modules.

RIMM memory modules and requirements

DDR3 memory supports 3 DIMM modules in three-channel mode. The same size and type of memory must be installed in the corresponding DIMM connectors for channels A, B and C. As a rule, memory slots have a color coloring to simplify the understanding of their destination.

Acquisition of memory for upgrading

HP recommends purchasing memory modules directly in HP outlets, from authorized HP dealers or reliable computer component suppliers such as CRUCIAL .

Many suppliers of computer components that are HP partners can help in choosing a suitable memory for your computer model. Before purchasing memory modules, you need to know how much memory is needed, and which type it is compatible with your computer.