T021: Lost Electrical Connection/Communications With Drive Sled; T022: Lost Electrical Connection/Communication With Drive Brick - IBM System Storage TS3310 Setup And Operator Manual

T021: Lost electrical connection/communications with drive
sled
Description
Detection Scenarios
Root Causes
Possible CRU Replacements
Possible FRU Replacements
|
Resolution
T022: Lost electrical connection/communication with drive
brick
Description
Detection Scenarios
Root Causes
Possible CRU Replacements
Resolution
The library had been communicating with a drive sled and
had considered it to be assigned to a logical library. Two
way communications no longer occur. This ticket is
specifically NOT caused by physical removal of a drive if
the drive is not assigned to a logical library.
1. Routine polling of the sled can no longer occur.
2. Specific library to drive sled commands are not
responded to.
1. Drive is physically remove/unplugged (intentional or
never installed correctly).
2. Various hardware failures on the drive sled.
3. Various hardware failures in the library.
v Library Control Blade
v Drive Sled
v Internal Cables and Boards Kit
v Expansion Module Chassis
Perform "DR029: Drive Communication Loss Resolution"
on page 11-43.
Before closing the ticket, perform the following:
1. If a drive is physically removed from the library,
reinstall the drive (refer to "Adding/Removing/
Replacing a Drive Sled" on page 12-15).
2. If a drive is unplugged, reconnect the drive.
3. Before replacing a library component or contacting IBM
Technical Support, refer to "Diagnosing a Problem" on
page 10-2 for additional diagnostic procedures.
Internal to the drive, the sled control board can no longer
communicate with the drive brick.
1. Routine Polling between sled control board and drive
brick can no longer occur.
2. Specific commands such as unload, reset, etc. are not
responded to.
1. Cable broken, unplugged, damaged, etc.
2. Drive brick failure.
Drive Sled
Before performing the following:
1. "Removing a Drive Sled" on page 12-16
2. "Replacing a Drive Sled" on page 12-17
refer to "Diagnosing a Problem" on page 10-2 for
additional diagnostic procedures.
Chapter 11. Service Action Tickets (Txxx) and Diagnostic Resolutions (DRxxx)
11-13