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6.741 bytes |
Service Hints & Tips |
Document ID: GSMH-39FBMH |
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This document is provided to IBM and our Business Partners to help sell and/or service IBM products. It is not to be distributed beyond that audience or used for any other purpose. |
PS/2 Server 95 - Support for 1GB and 2GB hard drives
Applicable to: World-Wide
Symptom
The Type 1 and Type 2 processors do not support the IBM 1GB and 2GB disks
Problem Isolation Aids
A new version of the system processor board (Stage 1) POST/BIOS code is now available for certain models of the 8590/8595 at no cost to customers requesting the upgrade. The upgrade is implemented by changing a module on the processor board (not the system board).
Fix
The module is available for some type 1 and type 2 processor boards only. The type 3 processor board has previously implemented these capabilities.
The upgrade provides the following additional capabilities:
1. Adapter ROM memory will be more efficiently utilised to minimise adapter configuration conflicts.
2. BIOS support for fixed disks up to 3.94 Gigabytes per Device.
3. Supports search IML from any PUN (Physical Unit Number) or SCSI ID. The system partition is no longer restricted to only SCSI ID=6. Each fixed disk ID will be searched for a valid system partition.
4. Allows redundant system partitions (IML).
5. Sharing os SCSI devices. An external SCSI device, such as the 3511, may be shared between two system units.
The following models are affected:
1. Type 1 processor systems, models 0GX, 0JX or 0KX and systems that have been upgraded by a sales feature to 'P3'. (The 'X' in the model number may be any character).
2. Type 2 processor systems, model 0HX. (The 'X' in the mdel number may be any character).
Only the following type 1 processor boards with an EEPROM module label having the following part numbers may be upgraded:
PROCESSOR FRU P/N MODEL EPROM P/N LOC.
20MHZ SS 92F0049 0GX 91F9812 U36
25MHZ DX 64F0201 0JX 84F9154 OR 91F9812 U36
33MHZ DX 64F0198 0KX 84F9154 OR 91F9812 U36
50MHZ DX 92F0048 P3 (UPGRADE) 91F9812 U44
Only the model 0HX type 2 processor boards may be upgraded.
PROCESSOR FRU P/N MODEL EPROM P/N LOC.
25MHZ SX 92F0079 0HX N/A U16
The package contains:
The new module (Type 1, part number 52G9509 on the module label), or (Type 2, Part Number 41G9361 on the module label).
TYPE 1 AND 2 PROCESSOR BOARD, COMPONENT SIDE
PUSH HERE TO RESEAT THE BOARD.*
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"BLUE LEVER---> _____________X______________ <---"BLUE LEVER"
____| |____
| ______________ ____ | LOCATION OF
INTEL*** | ___ |______________| |____|<---EPROM
PROCESSOR---->| | CACHE CONNECTOR** | TYPE 1, U36
||___| | OR U44
| __ __ | TYPE 2, U16
|____||_____|_________||______|______|
* THE 20 & 25 MHZ SX PROCESSOR BOARDS HAVE NO CACHE CONNECTOR.
Notes
1. Result of the previous problem determination have shown that the processor board is often not fully seated after being removed and reinserted. This may cause intermittent and difficult to diagnose system failures.
2. The 'Blue levers' located on the top corners of the processor board are for removal of the baord only. Do not attempt to re-install the processor by using the levers. The correct method is as follows :-Centre the board into the slot carefully aligning the levers with the side rails. Place the heel of the hand in the centre of the card edge and 'Firmly' force the board all of the way into the connector slot. Approximately 17-22lbs of force is required to fully seat the board.
3. This is a functional enhancement and is customer installable. There will be no field plan (ECA).
4. This is not a maintenance part, therefore no FRU part has been released in the parts distribution system.
5. Earlier versions of the reference diskette are compatible with this EEPROM module, however the system partition (Reference diskette) must be upgraded to version 1.3x or later (type 1) or version 1.2x (Type 2) to support these enhancements.
6. All affected processor board FRU's have been upgraded to the current level POST/Bios code version.
7. Intel is a trademark of Intel Inc
SAS KEYWORDS:
PSY2 PSY2FDSK PSY2PROG D/T8590
PS2 PS/2 SCSI BIOS
IML MICRO CODE D/T8595
2GB 8595
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Search Keywords |
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Hint Category |
Hard Drives, Retain | |
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Date Created |
11-09-95 | |
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Last Updated |
11-01-99 | |
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Revision Date |
11-01-2000 | |
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Brand |
IBM PC Server | |
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Product Family |
Server 95 | |
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Machine Type |
8590, 8595 | |
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Model |
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TypeModel |
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Retain Tip (if applicable) |
H044422 | |
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Reverse Doclinks |