We are currently in the same situation, 3584 6x LTO1 drives, all but 10 slots filled in the library. We have been look at switching the drives to either lto2 or 3 and adding the expansion frame to the library. We are now comparing these costs to a Virtual Tape solution, so far the Virtual tape looks to be the way to go...No decisions made yet though
LTO3 can read but not write LTO1 media, however it can read and write LTO2 media. LTO1 can not read or write LTO3 or 2 media. Just my 2 cents... Regards, Paul -----Original Message----- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf Of goc Sent: Friday, May 06, 2005 6:09 AM To: ADSM-L@VM.MARIST.EDU Subject: [ADSM-L] hi tsm'ers ! UPGRADE question Importance: High hi all, i'll first explain the situation and then tell you what we want do , i appreciate every reply and help you offer TSM 5.2.4.0 on pSeries 640 2x8 port switch LTO library L32 with 12 LTO1 drives (and the same configuration on DR site) as we approached the capacity of this one LTO library we have now choice to upgrade the whole thing option 1. the simplest - add D52 (driveless) frame filled with 400 LTO1 tapes option 2. my proposition - replace 9 LTO1 drives with 9 LTO3 drives + additional D52 frame filled with LTO3 cartridges why 9 ? well i thought because we have a lot of archive data on LTO1 tapes and considering the long expiration policies i think some day the LTO1 tapes will get used to delete the stuff i'm not sure but think that LTO3 drive cannot write LTO1 tapes am i right ? i cant find on ibm site the interoperability matrix for LTO(drives/tapes) ,can someone point ? thanks so if LTO3 drive can read from LTO1 tape , can LTO1 drive read LTO3 tape ? (of course with LTO1 drive native speed) (this is acceptable) furthermore , one idea (not mine) was to install LTO3 drives and tapes and migrate the whole thing to LTO3 tapes, but what then with all the "empty" LTO1 tapes and 3 LTO1 drives ? :-) boy ! i'm really confused and my chiefs want some solution proposition one of them wants to stay in-line with new technologies and one is for the simplest solution ... me ? i'm for new technology but i really in this moment don't know how it will look like and how the whole thing should be done, and what and how is the smartest way to do this thing. thats's pretty much it, i will surely find some other question as time goes by and i'll ask them here coz this community is my only reference for questions like this, coz i know from experience ibm sales personel is really confused when we talk to them about our needs, and for tech guys from ibm they got itchy all over when i call them on the phone ;-) LOL nevermind ... thanks for every letter you will write in reply ---------------------------------------------------------------------------- -------- goran konjich senior unix administrator vipnet
