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Just need a small clarification.
In the same scenario below things have been done
1. Upgraded the firmware of LTO4 tape drive to latest firmware.
2. Upgraded the HBA card of the firmware which is connected.
3. Checked media and no problem with it.
4. SAN environement is also OK.
5. Even I have provided the correct SCSI reservation for media type in netbackup.
But even after doing same things still we are getting frequent media errors code 84 on alternate occasion.
So my question is
1. Is there can be problem with the file level inconsistence?
2. The issue we are facing is only on AIX server, but while writting data of solaris server is not giving media write error on the tape, so what can be issue?
3. Is any further things which we can check for the resolving the issue?
Solved! Go to Solution.
Watch out with AIX because you also have IBM standards for tape drivers, look at which tape drivers are being used on these systems is it the IBM one or another generic one. And look at the properties. In any case if same drive is used with Solaris and AIX it means its a driver problem. Of course that also means driver properties.
In setup we are using SL500 tape library which has LTO4 & LTO3 tape drive of HP vendor.
Is there anything we can check from HP. Is there any tool or link or docs which can proivde detail information about how the tape drive works when the backup is fired and can provide more detail in terms of troubleshooting
Can you open a case with IBM ?
You can get information about the error from the errpt command. errpt -a
Cross check errors in errrpt command and tape errors seens in error log in /usr/openv/netbackup/db/media directory, file error.
Also look at tape drivers used by drives known to AIX. Also look at version of ATAPE drivers these are the standard IBM tape drivers.
Attached site shows AIX commands which can come in handy, if you are not familiar with them.
Another thought, check you AIX server is at a software version supported by NBU.