IBM-AUSTRIA - PC-HW-Support 30 Aug 1999
If servers with hot-swap backplanes may experience intermittent
drive errors, defunct (DDD) drives that don't spin down or
drive LEDs that don't blink when a drive has failed.
If the system is an 8641, 8642 or 3518 with one or more hot swap
Check the Backplane Address Jumper:
- Shutdown the operating system
- Power off the server.
- Verify the Backplane Address Jumper configuration:
- For ALL 8641 backplanes: Jumpers should NOT be present
on the pins for Bank0, Bank1, or Bank2 on any backplane.
Refer to below Figure for locations.
The PC Server 520 (8641) may have shipped with a backplane
address jumper installed, it should be removed.
- For 8642 and 3518 backplanes: Each backplane MUST have a
unique address. A jumper should be present on the pins
for Bank0, Bank1, OR Bank2 depending on the backplane's
location within the server or expansion enclosure.
Refer to the below Figure to determine the correct jumper
setting for an 8642 or 3518 backplane:
SCSI ID Jumper
If two backplanes are connected to the same adapter, one backplane
must be set to high and the other one to low.
|SCSI ROM Address ID Jumper Setting
|HI = High
||Assigns SCSI IDs 8 to D to the backplane
|LO = Low
||Assigns SCSI IDs 0 to 5 to the backplane
More INFORMATION / HELP is available at the IBM-HelpCenter
Please see the LEGAL - Trademark notice.
Feel free - send a for any BUG on this page found - Thank you.