It's not the nightly. It's the processing TSM does during the day that's the issue at the moment. It starts at 5am, and I've known it to keep going until 4pm. Which leaves very little time for things like reclaiming tapes and similar.
I'm starting to think that a beefy box (Sun, Linux, whatever), with lots of 8 lane PCIe slots, and lots of quad port 4 Gbps HBAs, and lots of LTO4 drives, is the way to go. Which will run into the $hundreds of thousands, I have no doubt.
One LTO4 drive == one 4 Gbps port. Then you need the disk to spool the data at native speed. The current workload, based upon the current drives' native speeds, could be handled by 8 LTO4 drives, but given that so many databases backup direct to tape, and I'm not convinced they can stream LTO4 off their disk, I'm thinking 12-16 would be better. Per site. Two sites. How much would you expect to pay for 24-32 LTO4 tape drives?
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I'm starting to think that a beefy box (Sun, Linux, whatever), with lots of 8 lane PCIe slots, and lots of quad port 4 Gbps HBAs, and lots of LTO4 drives, is the way to go. Which will run into the $hundreds of thousands, I have no doubt.
One LTO4 drive == one 4 Gbps port. Then you need the disk to spool the data at native speed. The current workload, based upon the current drives' native speeds, could be handled by 8 LTO4 drives, but given that so many databases backup direct to tape, and I'm not convinced they can stream LTO4 off their disk, I'm thinking 12-16 would be better. Per site. Two sites. How much would you expect to pay for 24-32 LTO4 tape drives?