Installing Internal Add-On Components

This section explains how to install internal add-on components into A-Class servers. Internal add-on components include memory, cache memory, embedded disks and I/O cards. For cabinet mounted servers, it is necessary to remove the server from the cabinet to install internal add-on components.

Refer to the appropriate section for internal add-on component installation information:

Installing Memory (RAM) Modules.

This section describes how to install memory (RAM) into A-Class servers. Computer memory is commonly referred to as Random Access Memory (RAM). The terms RAM and memory are used interchangeably in this documentation. Abbreviated Memory SIMM installation instructions also appear on the 11" x 14" maintenance label adhered to the bottom of the top cover.

A-Class memory is sold as a module. A module is defined as two SIMMs. A-Class servers support three memory module sizes: 128MB, 256MB and 512MB. The 128MB memory module consists of two 64MB SIMMS. The 256MB memory module consists of two 128MB SIMMs and the 512MB memory module consists of two 256MB SIMMs. A memory module occupies two slots. The size (or capacity) of a memory SIMM is printed along the top edge of the SIMM.




	NOTE: SIMM is an acronym for Single Inline Memory Module. A SIMM has components on one side of the card, only.DIMM is an acronym for Dual Inline Memory Module. A DIMM has components on both sides of the card.The acronym SIMM will be used throughout this section to refer to either SIMM or DIMM.

A-Class servers provide 8 slots for memory. These slots are labeled in pairs and are numbered 0a, 0b, 1a, 1b, 2a, 2b, 3a and 3b. The nomenclature for a pair of SIMM slots is 0a/b, 1a/b, 2a/b and 3a/b. The following rules govern the installation memory in A-Class Servers.

Memory must be installed in SIMM pairs.
The capacity of SIMMs must be the same.
Install SIMMs with the greatest capacity in the lowest slot numbers.

Follow the steps below to install memory in A-Class servers.

Electrostatic Discharge Precautions.

The procedures in this section require opening the server and exposing the system to electrostatic discharge. Always observe all electrostatic precautions when working with components inside or out of the server. Failure to follow these precautions may result in component damage or loss of system reliability.

Use a grounding mat and an anti-static wrist strap.
Wear the anti-static wrist strap to ensure that any accumulated electrostatic charge is discharged from your body to ground.

Before You Do Anything...

Power down the system.
Unplug the server.
NOTE: Cabinet-mounted servers must be removed from the cabinet before proceeding.
Remove the top of the server by unscrewing the knurled captive screws on each side of the rear of the server. Slide the top back, lift it off, and set it aside.

Document which size SIMMs are already installed and in which slots.
Determine the size of the memory SIMMs to be installed.
If the capacity of the memory SIMMs to be installed is less than or equal to existing memory, install the new SIMMs in the next available slots.
If the capacity of the memory SIMMs to be installed is greater than existing memory, remove all existing memory “RAM Removal”, install “RAM Replacement”, the largest capacity SIMMs first beginning with slot 0a/b. Continue to add SIMMs in this manner.
Proceed to “A-Class Server Power Up and Boot Procedures”.

Installing Cache Memory SIMMs.

This section describes how to install Cache Memory SIMMs into A-Class servers. Abbreviated Cache Memory SIMM installation instructions also appear on the 11" x 14" maintenance label adhered to the bottom of the top cover.

A-Class Cache Memory is sold as a module. A module is defined as two SIMMs. A-Class servers support a single 1MB Cache Memory module. The 1MB Cache Memory module consists of two 512MB SIMMs. A Cache Memory module occupies two slots. The size (or capacity) of the Cache Memory SIMM is printed along the top edge of the SIMM.




	NOTE: SIMM is an acronym for Single Inline Memory Module. A SIMM has components on one side of the card, only.DIMM is an acronym for Dual Inline Memory Module. A DIMM has components on both sides of the card.The acronym SIMM will be used throughout this section to refer to either SIMM or DIMM.

A-Class servers provide 2 slots for Cache Memory. The following rules govern the installation memory in A-Class Servers.

Cache Memory must be installed in SIMM pairs.
The capacity of SIMMs must be the same.

Follow the steps below to install Cache Memory in A-Class servers.

Electrostatic Discharge Precautions.

Use a grounding mat and an anti-static wrist strap.
Wear the anti-static wrist strap to ensure that any accumulated electrostatic charge is discharged from your body to ground.

Before You Do Anything...

Power down the system.
Unplug the server.
NOTE: Cabinet-mounted servers must be removed from the cabinet before proceeding.
Remove the top of the server by unscrewing the knurled captive screws on each side of the rear of the server. Slide the top back, lift it off, and set it aside.

Install the first 512MB Cache Memory SIMM in either unoccupied slot.
Install the second 512MB Cache Memory SIMM in the remaining unoccupied slot.
Proceed to “A-Class Server Power Up and Boot Procedures”.

Installing Embedded Disk Drives.

This section describes how to install embedded disk drives into A-Class servers. Abbreviated embedded disk drive installation instructions also appear on the 11" x 14" maintenance label adhered to the bottom of the top cover.

A-Class servers support up to two embedded disk drives. As of April 2000, disk capacities of 4GB, 9GB and 18GB are supported.

Follow the steps below to install embedded disk drives in A-Class servers.

Electrostatic Discharge Precautions.

Use a grounding mat and an anti-static wrist strap.
Wear the anti-static wrist strap to ensure that any accumulated electrostatic charge is discharged from your body to ground.

Before You Do Anything...

Power down the system.
Unplug the server.
NOTE: Cabinet-mounted servers must be removed from the cabinet before proceeding.
Remove the top of the server by unscrewing the knurled captive screws on each side of the rear of the server. Slide the top back, lift it off, and set it aside.

Remove the disk carrier by removing the slotted T15 TORX screw and slide the disk carrier upward and toward the power supply.
If an embedded disk is already installed, disconnect the power and data cables from that disk. Place the disk carrier on a ESD safe mat.
Set address and configuration jumpers on the disk to be installed. The lower disk is usually the boot disk and the recommended address is 6. The upper disk is recommended to be address 5. DO NOT use address 7 as this address is reserved for the SCSI controller internal to the server. The SCSI controller address of 7 can not be modified.
Check configuration jumpers existing disks. Make sure the TERMINATION ENABLED jumper is removed.




	NOTE: The TERMINATION ENABLED jumper must be REMOVED on all embedded disk drives. Failure to remove this jumper will prevent the SCSI bus from operating properly. Symptoms include failing to boot from the embedded disk drives when external devices are connected to the "SCSI (Single Ended) 8/16/5 path".

Install the first embedded disk drive in the lower slot and the second embedded disk in the upper slot of the disk carrier. Orient the disk drive and the carrier such that the power and data connectors on the disk drive are on the same side as the sheetmetal tabs. Slide the disk drive into the carrier and secure the disk drive to the disk carrier with the four slotted T15 TORX screws that came with the disk drive.
Attach power and data cables to the embedded disk drives.
Install the disk carrier by inserting the two sheetmetal tabs on the disk carrier into the cut-outs in the server chassis. Secure the disk carrier using the slotted T15 TORX screw removed in step 1.
Proceed to “A-Class Server Power Up and Boot Procedures”.

Installing Input/Output (I/O) Cards.

This section describes how to install I/O cards into A-Class servers. Abbreviated embedded PCI I/O card installation instructions also appear on the 11" x 14" maintenance label adhered to the bottom of the top cover.

A-Class servers provide two slots for I/O cards. The cards which plug into these slots can be Peripheral Component Interconnect (PCI), High Speed Connect (HSC) I/O cards or both (see photo).

The following rules govern the installation of I/O cards:

When present, the A3342A HSC Remote Management I/O card must be installed in the bottom slot.
For one HSC and one PCI card configurations, the HSC card must be installed in the bottom slot.
For two HSC or two PCI cards, the load order does not matter.




	NOTE: When the A3342A HSC Remote Management card is installed, the console path changes from 8/16/4 to 8/4/0. This may prevent HP-UX from booting.

During selftest, server firmware detects the presence or absence of the A3342A HSC Remote Management card and will automatically direct server firmware output to the appropriate path (8/4/0.0 when the A3342A is present, 8/16/4.0 when the A3342A is absent). These path changes are transparent to the physical console which should be connected to the server via the connector labeled "Console 8/16/4.0". These path changes are also transparent to the server firmware 'CONSOLE PATH' value. Server firmware will not change the 'CONSOLE PATH' value. It is not necessary to manually change the 'CONSOLE PATH' value when installing or removing the A3342A. You may do so if you chose.

Example: A3342A is not installed. 'CONSOLE PATH' value is 8/16/4. Server firmware directs output to 8/16/4.0. Install A3342A. The 'CONSOLE PATH' value is still 8/16/4 but server firmware directs output to 8/4/0.0. Where the console is connected never changes.




	NOTE: When the A3342A HSC Remote Management card is installed, do not move the console cable from the server connector labeled "Console 8/16/4.0" to the 9-pin connector on the A3342A HSC Remote Management card. This connector is for UPS use only.

While server firmware can automatically respond to presence or absence of the A3342A HSC Remote Management card, HP-UX can not. If HP-UX was installed without a A3342A HSC Remote Management card installed, the HP-UX path for the console will be 8/16/4.0. If an A3342A HSC Remote Management card is installed, the path changes to 8/4/0.0. The driver for this path is mux2. If mux2 is not configured to be 'in', HP-UX will no longer communicate with the console. The symptom is that the server boots from the root disk, displays the following message then hangs;

Trying Primary Boot Path------------------------BootingBoot IO Dependent Code (IODC) revision 144HARD Booted.ISL Revision A.00.38 OCT26, 1994ISL booting hpuxBoot:disk (8/16/5.6.0.0.0.0.0;0)/stand/vmunix3605260 + 327680 + 408736 start 0x16b2e8

To correct this condition, remove the A3342A Remote Management card, boot HP-UX, run SAM and configure the mux2 driver to be 'in'. The A3342A Remote Management card can be installed after the mux2 driver has been verified to be 'in'.

Follow the steps below to install I/O cards in A-Class servers.

Electrostatic Discharge Precautions.

Use a grounding mat and an anti-static wrist strap.
Wear the anti-static wrist strap to ensure that any accumulated electrostatic charge is discharged from your body to ground.

Before You Do Anything...

Power down the system.
Unplug the server.
NOTE: Cabinet-mounted servers must be removed from the cabinet before proceeding.
Remove the top of the server by unscrewing the knurled captive screws on each side of the rear of the server. Slide the top back, lift it off, and set it aside.

If necessary, remove I/O card brackets. Refer to “A-Class Server I/O Card Removal and Replacement ”.
Carefully insert the I/O card into the backplane connector. The tab on the bulkhead will slide into its slot in the chassis.
Attach the card support guide to the front edge of the I/O card, hook the tab into its slot, and secure the support guide with the mounting screw.
Slide the bulkhead slotted tab up into position between the captive screw and chassis, and tighten the captive screw.

Installing Internal Add-On Components

Technical documentation

» Table of Contents

Installing Memory (RAM) Modules.

Electrostatic Discharge Precautions.

Installing Cache Memory SIMMs.

Electrostatic Discharge Precautions.

Installing Embedded Disk Drives.

Electrostatic Discharge Precautions.

Installing Input/Output (I/O) Cards.

Electrostatic Discharge Precautions.