HP NetServewr, LH 4, LH4r, LH 3 manual Processor and VRM Configurations, CPU Baseboard Layout

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Chapter 3

Installing LH 4 Components

Figure 3-2 shows the CPU baseboard parts and slot layout without the processors, terminators, VRMs, memory cage, processor cage, or structural hardware attached.

VRM 3/4

VRM 4

VRM 3

 

Processor 4

 

 

Processor 3

 

 

Processor 2

 

 

Processor 1

 

VRM 1/2

VRM 1

VRM 2

Figure 3-2. CPU Baseboard Layout

Processor and VRM Configurations

The HP NetServer’s CPU baseboard has four processor slots, labeled Processor 1 through Processor 4. It also has six voltage regulator module slots, labeled VRM 1/2, VRM 3/4, VRM 1, VRM 2, VRM 3, and VRM 4. VRM 1/2 and VRM 3/4 provide regulated power for the cache memory on the processors, and the other four VRMs supply power to the processors themselves. Figure 3-1 shows these slots on the CPU baseboard.

Add processors in ascending slot order. You must also add additional voltage regulator modules (VRMs) as you add processors, again in ascending slot order. There will always be VRMs in slots VRM 1/2 , VRM 3/4, VRM 1, and VRM 2, so a VRM is added to each corresponding slot as you install a new processor.

Refer to Table 3-1 to determine which VRMs must be installed for each processor.

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Contents HP NetServer LH 3/LH 3r To LH 4/LH 4r Upgrade Guide Audience Assumptions Contents Update the Operating System Related Documentation PrefacePurpose of This Guide Power Supplies Needed Tools You NeedPrecautions Page Installation Overview IntroductionChapter Verifying Contents Saving the Current Operating Environment Preparing for Hardware Upgrade For Non-HP Compaq Racks Upgrading the Rack LH 3r ConfigurationFor HP Racks Removing Covers and the CPU Baseboard Removing the Bezel and CoversLH 3r Removing the LH 3 CPU Baseboard Removing the CPU Baseboard Guide and Air BaffleLH 3r Installing LH 4 Components CPU Baseboard ComponentsProcessor and VRM Configurations CPU Baseboard LayoutVRM Name on Baseboard Installing Processors Installing Processors in Processor CageInstalling Memory Opening the Memory Card CageRemoving the Memory Cards Inserting DIMMs into Memory Board Installing the Chassis Reinforcement Bars Additional Processor, VRM, and Memory ConfigurationsInstalling the Chassis Reinforcement Bars Installing the CPU Baseboard in the Chassis Inserting the LH 4 CPU Baseboard into the Chassis Installing a Redundant Power Supply Installing the LH 4r in the RackFinishing the Hardware Upgrade Page Update System Firmware Updating FirmwareUpdating Firmware Update the Operating System Chapter HP Repair and Telephone Support Warranty and SupportHardware Warranty Page Regulatory Information Page Index Backing up disksIndex

LH 4, LH4r, LH 3, NetServewr specifications

The HP NetServer series, particularly the LH models (LH 3, LH 4, and LH 4r), represents a significant advancement in server technology during the late 1990s and early 2000s. These servers were designed for small to medium-sized businesses, providing reliable performance, robust features, and a cost-effective solution for various computing needs.

The HP NetServer LH 3, introduced in 1996, was a dual-processor machine that tapped into the capabilities of the Intel Pentium Pro. It was notable for its scalability, supporting up to 4GB of RAM, which was impressive for its time. Its architecture enabled it to handle multiple workloads simultaneously, making it ideal for web hosting and database applications. The server was equipped with advanced storage options, featuring SCSI interfaces and a range of RAID configurations to ensure data redundancy and speed.

Moving to the LH 4, released in 1997, this model pushed the boundaries further with enhancements in processing power and efficiency. The LH 4 supported Intel’s newer architectures, including the Pentium II processors, boosting performance for demanding applications. Its design emphasized hot-swappable components, allowing for easier maintenance without downtime — a crucial feature for business continuity. The LH 4 supported larger memory configurations, up to 8GB, facilitating more significant data processing tasks and multitasking capabilities.

The HP NetServer LH 4r, a rack-mounted version of the LH 4, provided a compact form factor suitable for environments where space was at a premium. This model was particularly popular among enterprises that required high-density computing solutions. The LH 4r maintained the reliability and performance characteristics of its predecessor while providing additional features such as advanced thermal management and improved network options, including gigabit Ethernet.

Key technologies across these models included HP’s Dynamic Smart Array technology, which optimized data storage and retrieval. The inclusion of Windows NT as a supported operating system ensured compatibility with contemporary applications, enabling businesses to leverage existing software investments.

In summary, the HP NetServer LH series, especially the LH 3, LH 4, and LH 4r models, represented a remarkable evolution in server capabilities. With their robust performance, flexibility, and user-centric features, these servers addressed the burgeoning demands of the business IT landscape, helping organizations achieve their operational goals. Their legacy lives on in the server technologies that continue to evolve today.
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