Very Interesting. I have a 10-drive 3584 library that came with 380 tapes about 22 months ago. So far, two tapes have locked in drives (which seems to have been a firmware issue corrected quite some time ago) and one of the tapes was flawed enough that the drive would die while trying to label the tape.
No other errors in the 22 months. We haven't even clocked any usage on the in-library cleaning tape. I push about 1.2 TB of data into the library daily, copy about 1.0 TB for off-site on a maximum 21-day rotation. Some of my tapes (SAP/Oracle) hit as high as 517 GB before going full, while others (MS-Exchange) tend to fill at 101 GB (Oracle is mostly empty, the MS-Exchange db is pre-compressed). My tapes are all 'IBM', actually OEM'd by Fuji as I understand. Based on the above -- I'd suggest getting a couple of Fuji tapes and seeing if you run into problems with them. Tom Kauffman NIBCO, Inc -----Original Message----- From: Jozef Zatko [mailto:[EMAIL PROTECTED] Sent: Monday, June 16, 2003 7:29 AM To: [EMAIL PROTECTED] Subject: Re: Interesting LTO fault's symptom Hi all, we are using 3583 LTO library with two LTO drives for 5 or 6 months. No error on tapes until now. Interesting findings. If some error occur with tapes I will check more detaily. Ing. Jozef Zatko Login a.s. Dlha 2, Stupava tel.: (421) (2) 60252618 "Tomáš Hrouda Ing." <[EMAIL PROTECTED]> Sent by: "ADSM: Dist Stor Manager" <[EMAIL PROTECTED]> 16.06.2003 14:14 Please respond to "ADSM: Dist Stor Manager" <[EMAIL PROTECTED]> To [EMAIL PROTECTED] cc Subject Interesting LTO fault's symptom Hi all, during last weeks I did interesting findings at one of production LTO 3583-L18 library. There are 2 drives and both was changed past series of media faults (one of them twice) past about 1 year of operation. We have about 20 "historicaly touched" tapes with average 3-4 write faults. Media faults are still repeated and my finding is all that faults were done at 70-75% of estimated capacity (set by longterm using to 105GB, we use client compression) during filling the tape. It seems like all tapes were corrupted nearly at the same place, of course there is some diffusion because this is only estimated filling. Faults at these tapes are repeatedly occured at these percents of max capacity. I understand when one tape has media fault repeatedly at the same place, but about 20 tapes? Could it mean that all tapes were corrupted by one bad drive at the same place, or can be reason at microcode? We are in contact with our IBM support to solve it, but I am interested if anybody of you register similar phenomenon? Tomas
