[linux-lvm] Data deduplication in LVM?

[Roy Sigurd Karlsbakk]

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
(+47) 97542685
roy at karlsbakk.net
http://blogg.karlsbakk.net/
--
I all pedagogikk er det essensielt at pensum presenteres  
intelligibelt. Det er et elementært imperativ for alle pedagoger å  
unngå eksessiv anvendelse av idiomer med fremmed opprinnelse. I de  
fleste tilfeller eksisterer adekvate og relevante synonymer på norsk.