Re: [Networker] one of our IBM LTO1 too slow

Olaf,

Ah yes, LTO1 drives.  The drive may be on it's way out.   For our IBM
drives an "E" test may run and pass, yet the drive may peform poorly.

You could move the drive to where another one is (which may involve
some work) and see if the problem follows the drive but it sounds like
you've narrowed it down to drive.   

There are some speed test that our STK tech does that a slow drive may fail.
That said; if you clean the drive and update its firmware and it still 
performs slower than the others it should be replaced.

Robert Maiello
Pioneer Data Systems

On Thu, 8 Jun 2006 10:46:39 -0400, Albert Eddie Contractor AFRPA CIO/IT 
<Eddie.Albert AT AFRPA.PENTAGON.AF DOT MIL> wrote:

>The only thing I have noticed is, transfer rate on LARGE files is GREAT.
>But when the server runs into a lot of small files, it takes longer and
>throughput goes down waiting for the device. /ALE
>
>> -----Original Message-----
>> From: Legato NetWorker discussion
>> [mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU] On Behalf Of Olaf Zaplinski
>> Sent: Thursday, June 08, 2006 10:23 AM
>> To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
>> Subject: [Networker] one of our IBM LTO1 too slow
>>
>> Hi,
>>
>> we have 4 IBM LTO1 drives here. One of them writes at a very
>> slow rate when staging from disk to tape. It starts with the
>> usual speed, about 15-20 MB/s, but soon drops down to 550
>> kB/s. Do you know what the problem might be? I already took
>> the drive offline and tested it with a blank tape, but there
>> were no errors. It is not media related, those tapes are
>> being written at the usual speed in other drives.
>>
>> Olaf
>>
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>
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