I had a 3584 with 10 LTO1 drives for 3 years; in that time, I think we replaced two drives. We replaced the library (lease expired) with a new 3584 with 10 LTO2 drives over a year ago; we've had one drive flake out and replaced it about a month ago. IIRC, all the LTO1 swaps were in the first six months.
I run about 2.2 TB of backup/archive nightly, and copy about 1.9 TB of that for off-site. I'd check the microcode/firmware on the drives and libraries; I didn't have that kind of failure rate with the DLT-7000 drives, even. Tom Kauffman NIBCO, Inc -----Original Message----- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf Of Dennis Melburn W IT743 Sent: Tuesday, December 13, 2005 11:31 AM To: [email protected] Subject: Normal # of failures on tape libraries Our sites use ADIC Scalar 1Ks as well as one ADIC 10K. The Scalar 1Ks have 4 LTO1 drives in each and the 10K has 34 LTO2 drives. We experience occasional failures on these drives and have to replace them. My question is, is it normal for a site that has alot of drives to experience drive failures about every 1-1.5 months? My manager is rather annoyed at the fact that it seems that we are constantly replacing drives even though it doesn't cause any downtime for our TSM servers while they are being replaced. If this is a normal part of having tape libraries then that is fine, but I don't have enough experience in this field to say either way, so that is why I am asking all of you. Mel Dennis
