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RE: Temporary tape errors



fixed

Jeff,

We have an internal drive and the report shows lots of TTE's, I have never looked at this before so don't know if it has always been like this. The report doesn't recommend replacing any media and we have not had any issues restoring anything off tape.

Scott

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Jeff Crosby
Sent: Tuesday, March 04, 2014 6:51 AM
To: Midrange Systems Technical Discussion
Subject: Re: Temporary tape errors

I heard from my HW service provider this morning. They want to replace the internal 5755 drive, a 'cage', and wiring harness I think that's it, but he may have said something else. I asked whether the replacement drive was tested and would eliminate the Temporary Tape Errors ("TTE" for short).
They said it was tested, but no, the TTEs would not be eliminated.

I asked why should I change drives and still have TTEs? They said this drive would have fewer errors. They have 15 systems in their data center and every internal tape drive has TTEs. Customers with internal tape drives also have TTEs. Systems with external tape drives (data center and
customers) don't have TTEs. Per them, TTEs on internal tape drives is the norm.

This *really* bothers me to think that it's acceptable in the midrange world to have TTEs on internal tape drives. I'm really interested in whether anyone on this list that is using internal tape drive for backup would check their *VOLSTATS via the PRTERRLOG command and report.

I have yet to give them the OK to do this. When I do, I may say that I want to do it Friday at 5pm so if there is a catastrophic issue we have the weekend to recover. (The last time they replaced the internal tape drive we lost a hard drive upon restart.) Maybe I'm overreacting, but I am amazed at how much my confidence in the HW has been shaken over the past couple of months.





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