On 11. juni. 2009, at 00.30, Stuart D. Gathman wrote:
One OSS backup product that does
deduplication is BackupPC (written in Perl). In the backup server,
every file
gets hard linked to a name in a special directory that is its md5
checksum
(plus some fiddly logic to handle metadata)
This sounds like file-level deduplication. Most storage systems sing
dedup, uses block-level dedup. NetApp is one example; they dedup
everything with 4k blocks, doing the actual deduplication at night.
roy
--
Roy Sigurd Karlsbakk
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roy@karlsbakk.net
http://blogg.karlsbakk.net/
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I all pedagogikk er det essensielt at pensum presenteres
intelligibelt. Det er et elementært imperativ for alle pedagoger å
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