User's Manual

hp StorageWorks File System Extender User Guide 201
Media management problems
Description Initialization of media with large block size fails with the following error:
ERROR: Medium 052007, volume 3: Init failed (12053: SCSI driver
error. 'Buffer too large. See error.log for details.').
(Windows-system specific)
Explanation This problem occurs because some Windows SCSI or FS host bus adapter (HBA) drivers
(particularly Adaptec and QLogic) do not support large block sizes by default. You can enlarge
the scatter/gather list value to increase the transfer size beyond 64 KB.
Workaround You need to change the registry setting that allows the lists to be expanded to up to 255
elements. Manually update the registry as follows:
1. Run Registry Editor (regedit) to edit the system registry.
2. Under My Computer, expand HKEY_LOCAL_MACHINE, SYSTEM, CurrentControlSet,
Services, DriverName, Parameters, and Devicen. DriverName is the name of the miniport
driver, for example AIC78XX, and n in Devicen is the bus number assigned at initialization.
3. Select Edit > New > DWORD Value and enter MaximumSGList in the text box.
4. Right-click MaximumSGList, select Modify, and enter FF in the Value data text box (FF
equals to 255). Make sure that the Hexadecimal radio button is selected and click OK.
5. Exit the Registry Editor and restart the system.
Description Volume overflow when initializing empty medium volumes.
Explanation In some cases if a medium is bad, this might not be detected immediately by the drive. It is
possible that the tape drive skips bad areas of the medium until it reaches the end of the
medium.
If this happens, then a misleading SCSI error is reported. For example:
fse_Error: 11005: Medium overflow (physical EOM).
Volume Overflow ([0x00,0x02] End-of-partition/medium detected.
The current operation fails. The next time an attempt is made to use this medium, the drive
detects it is bad and marks it accordingly.
Workaround None