Re: petabyte class archival filestore wanted/proposed

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>    1) Tapeless: maintain multiple copies on disk (minimize 
>backup/restore lag)

Can you really call it archival if you're willing to pay 5 times as much 
for quick access?  Maybe you need a different word.  Archive means large 
quantities of data with very low access frequency.  And sometimes, in the 
current legal climate, with very low chance of destruction.

You word this as if the only potential use of tape is backup of disk-based 
data, but it's also pretty useful as the primary copy of archival data.

--
Bryan Henderson                     IBM Almaden Research Center
San Jose CA                         Filesystems

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