Originally Posted by chichow
what's wrong with tape?
do 2-3 image snapshots of 1Tb of data and the cost per Gb is going to be so much lower than drives...
1) There are no non-loader tape drives that will do 1Tb uncompressed.
2) The closest you'll get is a 800/400Gb LTO-3 drive and you are looking at around $4200 for that (4200 = 70 250Gb harddisks).
3) You could pick a cheaper system, with say 120Gb uncompressed but you'd still be looking at a $400 drive, a $120 SCSI card and another $500 in tapes, once again that is over 20 drives.
4) You could try finding a used tape library
like this one but 15*DLT7000 is still only 525Gb... Plus most of them need a non-standard SCSI card, like a LVdiff card...
All in all, I suggest a crapload of HDD's, in external exclosures and put away in a nice water/fireproof safe.