We've found the same problem, but we think that the problem is mainly
with the
media (Maxell) rather than the drives. Out of 200 Maxell tapes we have had a
failure rate of 30% so far (thats 60 tapes) and it just keeps growing. With
our
Quantum tapes we have see a failure rate for tapes in the 2 to 3% range but
are still doing a bit of investigation on these tapes.
It also seems that Maxell is unwilling to honor their warranty. They've
had
5 "bad" tapes for testing for 10 weeks now with no answer back from them.
The testing was to take 2 weeks. They won't even answer emails. I hate to
slam
vendors, but I would stay away from Maxell.
Ken Gehring
----- Original Message -----
From: "Steven Frost" <Steven.Frost AT POWERCO.CO DOT NZ>
To: <NETWORKER AT LISTMAIL.TEMPLE DOT EDU>
Sent: Tuesday, October 28, 2003 4:10 PM
Subject: [Networker] SDLT tape reliability.
Hi there. I am finding that the attrition rate on our Super DLT tapes seems
rather high.
For tape that is purported to last 1,000,000 passes , we should not have ANY
media problems.
For example , a volume previously had 250GB+ written during the normal
savegroup process and was marked as full
without errors. On it's next cycle a media I/O error happens after, say,
25GB, and Legato uses another
volume from the jukebox inventory. The tape with the media error is now
useless ( after 25GB anyway).
Is this normal?
Our volumes at most would only have 20 saves done over the last 18 months,
as we have had our SDLT drives since April 2002, and the tapes are re-used
monthly. Out of 140 cartridges, nearly 22 are now dodgy. Is there a way to
rejuvenate these?
We have had dual Compaq/HP SDLT 160/320 drives in a Compaq MSL5026 Jukebox
since November, beforehand they were 110/220 drives. We have replaced one of
these drives twice now , as there were too many tape problems. If a
tapedrive is 'shoeshining', would that affect the tape media?
Any comments or similar experiences ? Thanks .
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