HP LTO6 - Tape Drive Keeps Shutting Down. How To Check If Data Compression Is Enabled with HP LTT

Asset ID:	1-72-2358214.1
Update Date:	2018-02-08
Keywords:

Solution Type Problem Resolution Sure

Solution 2358214.1 : HP LTO6 - Tape Drive Keeps Shutting Down. How To Check If Data Compression Is Enabled with HP LTT

Applies to:

StorageTek SL150 Modular Tape Library - Version All Versions and later
Information in this document applies to any platform.

Symptoms

How to check the drive whether data compression is enabled or not from HP LTT

tape drive keeps shutting down

HP.ULTRIUM6-SCSI.004 HCART2 DOWN-TLD No Yes 80 8:32:13

HP.ULTRIUM6-SCSI.000 HCART2 SCAN-TLD No Yes 82 1:52:38
HP.ULTRIUM6-SCSI.001 HCART2 SCAN-TLD No Yes 71 6:54:19
HP.ULTRIUM6-SCSI.002 HCART2 SCAN-TLD No Yes 72 5:50:12
HP.ULTRIUM6-SCSI.003 HCART2 SCAN-TLD No Yes 74 7:26:15
HP.ULTRIUM6-SCSI.004 HCART2 DOWN-TLD No Yes 80 8:32:13
HP.ULTRIUM6-SCSI.005 HCART2 SCAN-TLD No Yes 76 12:52:39
HP.ULTRIUM6-SCSI.006 HCART2 SCAN-TLD No Yes 74 19:51:50
HP.ULTRIUM6-SCSI.007 HCART2 SCAN-TLD No Yes 84 13:21:18
HP.ULTRIUM6-SCSI.008 HCART3 TLD No No xprbck110 0
HP.ULTRIUM6-SCSI.009 HCART3 TLD No No xprbck110 1

Cause

Drive keeps going down as seen from the backup application

Drive is ok from hardware side but EMM server (Resource broker) is keeping the drive down from application side

Solution

Suggest customer check the configuration of the drive from NBU
Suggest customer check why the EMM server is keep downing the drive

Suggest customer check any tldcd child processes running if yes kill the child processes :

1. Find robot control host........

> run tpconfig -d on failing media server

2. check the hung tldcd process on robot control host

> run /usr/openv/volmgr/bin/vmps on robot cntrol host (no child tldcds should be running)

Also answered customer query : How to check the drive on whether data compression is enabled or not using HP LTT

open the support ticket by using the HPE LTT tool
select the drive configuration ------>>>>

|__ Drive
||__ Data compression : Enabled

Note:
Drive compression can be enabled or disabled by the respective backup software which is controlling it.
So we need to be sure if the compression settings on the backup software set accordingly.

References

<NOTE:1474118.1> - SL150 - How to Generate and Retrieve a Service Bundle (Health / Error Log) From the StorageTek SL150 Modular Tape Library
<NOTE:2132934.1> - HP LTO - How to Install HP LTT on a Server
<NOTE:1474172.1> - SL150 - How to Find Firmware Update Patches and Upgrade the StorageTek SL150 Modular Tape Library With Those Firmware Patches

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