T10000C - Demod Process Fails Because We Cannot Get A Quality Servo Signal On This Channel

Asset ID:	1-72-2373457.1
Update Date:	2018-03-21
Keywords:

Solution Type Problem Resolution Sure

Solution 2373457.1 : T10000C - Demod Process Fails Because We Cannot Get A Quality Servo Signal On This Channel

Applies to:

StorageTek T10000C Tape Drive - Version All Versions to All Versions [Release All Releases]
Information in this document applies to any platform.

Symptoms

Summary:Verify Demod process fails because we cannot get a quality servo signal on this channel.

Fault event description:Verify Demod process fails because we cannot get a quality servo signal on this channel.
receiver_id: SDP2-2.4
siteID: 1506489692054.0
CST_UNLOAD event. Verify Demod process fails because we cannot get a quality se
************* ADDITIONAL INFORMATION *************
*** Alarm Description ***
FSC(5160): CST_UNLOAD event. Verify Demod process fails because we cannot get a quality se
nullFSCs:
5163:Verify Demod process fails because we cannot get a quality servo signal on this channel.
5164:Verify Demod process fails because we cannot get a quality servo signal on this channel.
5702:This is a warning. While doing verify demod, if the servo code suspects the servo readers are clogged, the servo will go into verify demod recovery The tape is stopped the heads are brushed midtape and the drive tries verify demod again.

Changes

Cause

MODEL = T10000C
FSC = 5160
(FSC Match Found in Rev. 3.63)

FSC: 5160 VERIFY_FSC_BAD_CHANNEL_0
MIM Code: INOPERABLE
FRU: HARDWARE CONF: 80%
FRU: MEDIA CONF: 20%
Summary: |HEAD ACTUATOR |TAPE |ECK CARD |
Field Text:
Verify Demod process fails because we cannot get a quality servo signal on this channel.

Solution

According to log analysis the detected fatal drive error (SNO) has occurred due to down level microcode. These SNO (Should Not Occur) errors will cause the drive to stop communicating with the host and automatically force a drive dump. The drive will come back online after it IPLs. This action will also cause the current tape job to terminate.
This drive has microcode that is down level by several revisions and is considered unsupported microcode. It is highly recommended to upgrade the drive microcode, at your earliest convenience, on all drives of this model to the current microcode version 3.65.103.

T10000/9840 - Upgrading Firmware on a Tape Drive (Doc ID 1680168.1)

Should the drive continue to fail after code update, run diagnostics on the drive to verify functionality. If the drive fails, replace the drive.

References

<NOTE:1680168.1> - T10000/9840 - Upgrading Firmware on a Tape Drive

Attachments

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