SL500 : Put Failures, Empty Slot Seen When Slot is Occupied

Asset ID:	1-72-1534394.1
Update Date:	2017-10-02
Keywords:

Solution Type Problem Resolution Sure

Solution 1534394.1 : SL500 : Put Failures, Empty Slot Seen When Slot is Occupied

Applies to:

Sun StorageTek SL500 Modular Library System - Version All Versions and later
Information in this document applies to any platform.

Symptoms

Robot does not scan whatever tape put in cell 0,1,6,8 when "scanaudit" is ON.
Hence SL500 thinks the slot is empty & when carts are added via CAP, Robot tries to put the new cart into that slot and fails.
A physical audit of slot 0,1,6,8 does scan the barcode & everything is fine until the next power cycle or door open event.

When "scanaudit" is OFF, the problem is not seen but the audit time increases greatly.

Array & Robot are replaced and alignment is checked OK.

Cause

Code Bug / Design Limitation

Solution

This is a known issue with some of SL500s and workaround is to turn the scanaudit off.

---SL500 CLI ---
>scanaudit print
Show the library's current 'scanaudit' option setting

>scanaudit <on|off>
Set the 'scanaudit on/off' option.
This option controls whether or not the library performs a scanning audit.
Setting option to 'on' will cause scanning audits.
Setting option to 'off' will disable scanning audits.
Hard to read labels are more difficult to read with scanning audit, but it is faster than reading each individual location

References

<BUG:16236367> - POWERCYCLE AUDIT RETURNS CELL 0,1,6,8 AS EMPTY WHEN ACTUALLY IT'S FULL.
<BUG:15611355> - SUNBT6911564 PWR CYCLE AUDIT RETURNS CELL EMPTY WHEN ACTUALLY FULL, FOR A COUPLE

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