Re: ?continue using 3590's or convert to LTO tape?
We're keeping our existing 3494 with eight 3590H1A's to handle workstation
and smaller size node backups (being we're heavily invested already). We've
just ordered and received a 3584 with six LTO2 drives to handle our
increasing demand for offsite media copies as well as large server/node
backups. We're anticipating approximately 75Tb of growth in the next year
that can be handled much more efficiently and cost-effectively using LTO2
drives and a new library. I think the answer is probably both, but you
really have to determine on your own being there are a number of variables to
consider (particularly sunk costs).
James R Owen wrote:
> To other TSM sites w/ substantial investment in 3590 technology:
> We are again trying to figure out what to do for additional TSM tape
> capacity. We currently have two IBM 3494 ATL's (each w/ six 3590E1A
> SCSI-connected drives and ~2000 tapes in each) for primary STGpools.
> We also have two IBM 3584 ATL's (one w/ four LTO1 and two LTO2 drives,
> and another w/ three LTO1 and three LTO2 drives, all FC and all
> using LTO1 media.) [The LTO's were our remote, online Copy STGpools.]
> To continue using 3590 media for our primary tape STGpools, we either
> need to buy an additional 3494 frame (used?) or convert our existing
> drives from 3590E's to 3590H's (used?). The E->H conversion would
> eventually give us 50% more capacity with our existing media via TSM
> tape reclamation processing. That seems reasonable to me, but...
> Others here speculate that perhaps we should consider converting from
> 3590 to LTO media because of increasing 3590 maintenance costs, etc.
> Another concern is that in 3-5 years our 3590 media may be obsolete
> [definitely beyond the 10 year warranty period], so why not get off now?
> Are you [other sites substantially invested in 3590's] continuing to
> invest in 3590's -or- are you converting to other (LTO?) tape technology?
> Is anyone considering/already doing a substantial 3590->LTO conversion?
> If so, we would like to talk with you.
> Thanks for your help.
> jim.owen AT yale DOT edu (203.432.6693)