I/O Dimm Boot-Time Errors - IBM QS21 - BladeCenter - 0792 Service Manual

Table 14. SAS boot errors (continued)
Code Message
E430B SAS disk
(@<Bus>,<ID>,<LUN>):
SAS Address
xx:xx:xx:xx:xx:xx:xx:xx,
LUN#<LUN>

I/O DIMM boot-time errors

These error messages only appear if you have installed optional I/O DIMM.
Table 15. I/O DIMM boot errors
Code Message
E2001 Incompatible DIMM type
(not DDR2).
86
BladeCenter QS21 Type 0792: Problem Determination and Service Guide
Description
The blade firmware was not able to
read a remote disk. The error might be
due to connectivity, SAS switch(es),
remote disk, remote storage, hardware,
blade firmware, or SAS Expansion
Card firmware problem(s).
Output: The <Bus>, <ID>, and <LUN>
values are determine the disk's Open
Firmware Device Tree unit address
(see IEEE 1275). The
xx:xx:xx:xx:xx:xx:xx:xx value
determines the SAS address of device
containing the disk.
If a disk is a physical device then the
SAS address is the identifier of disk
itself. If a disk is a volume within a
RAID controller then the SAS address
is identifier of the RAID controller. The
<LUN> is disk logical unit number.
Note: though the logical unit number
is printed explicitly and within the unit
address, it is always the same value.
Sample error message:
E430B SAS disk (@0,3,0): SAS
Address 50:01:0b:90:00:42:8a:ee,
LUN#0
The Open Firmware Device Tree node
name is /axon@10000000000/plb5/
plb4/pcix@4000004600000000/scsi@2/
disk@0,3,0.
The disk is located at Bus#0, ID#3,
and LUN#0. The SAS address of
device containing disk is
50:01:0b:90:00:42:8a:ee. The logical
unit number is zero.
Description
The DIMM is not a DDR2 DIMM.
Action
Try following steps in order to fix the
problem:
1. Ensure the remote disk is operating
correctly. Try to read the disk from
another blade server in the same
BladeCenter unit. This verifies SAS
topology and remote storage
operation as well.
Note: Concurrent access to a disk
from a different blade server might
corrupt the disk's file system.
Check with a system administrator
before attempting this step.
2. Ensure the remote storage is
configured correctly. If configured
as a RAID array, check the RAID
configuration. See the
documentation that comes with the
storage for further information.
3. Ensure the operation of the entire
SAS topology. This includes
checking any SAS switches, SAS
cables, connectors, etc. See the
documentation that comes with
each component of the SAS
topology.
4. Reboot the blade.
5. Power down then remove and
reinstall the blade server in the
BladeCenter unit.
6. Remove and reinstall the SAS
Expansion Card.
7. Ensure the SAS Expansion Card
firmware and blade firmware
version are at the correct level.
8. If the error started after a SAS
Expansion Card firmware upgrade
or a blade server firmware
upgrade, consider a rollback to the
previous firmware versions. Check
with the documentation at
http://www.ibm.com/systems/
bladecenter/support/ to verify
whether rollback is possible.
Action
Replace the DIMM with a DIMM of type
DDR2.