Hardware Stuff <[EMAIL PROTECTED]> wrote: > Tape is generally a linear process with little chance of ensuring that - DAT does read-after-write - there is the --compare option to tar > the data was actually written correctly, a disk can be easily setup to > verify the write. Tape is generally a "big block", an error wipes out To my knowledge, except on magneto-optical medium where this is the standard, there is no verify pass after the writing. > 100 Gig of drives from Onsale: $3600. Could be lowered with a bit of > patience. Hotswap not necessary, not main storage. However, a > third drive is required, which makes it $5400. > HP C5698 35Gig uncompressed, $6340 > Tapes are probably $100+ each. DAT DDS-3 is less than 1500 US$, stores 12 GB with no compression (24 GB rumoured when compressing, depends on your data). Each tape is around 30 US$ (again, this is end-user swiss price, so probably a lot cheaper). So 100 GB is around 1800 US$ for the first 100 GB, 300US$ for the next. Also, you can get auto-changers for it, so you can do automated backups (16 tapes is not uncommon, which is, uncompressed > 100 GB). Auto-changers are, of course, costly, but this is not a recurring cost. maybe 5400US$ (wild guess, your price :)) for the first 100 GB, then 300 US$ for the next(s). There is also AIT (70 GB?) and DLT for the space-hungry.
