wow, proprietary change sto code that is subject to a law suit between Sun and 
NetApp!
 
The problem with Advanced File Type devices is the file system fragmentation 
you suffer. That reduces performance as it is, without the de-dupe being thrown 
in. You should look at what the implications of that is.Siobhán> Date: Wed, 5 
Nov 2008 00:42:55 -0500> From: networker-forum AT BACKUPCENTRAL DOT COM> 
Subject: [Networker] de-duplication> To: NETWORKER AT LISTSERV.TEMPLE DOT EDU> 
> siobhanellis wrote:> > > > de-duplication at target, if you are using 
NetWorker, will pretty much fall into using EDL (EMC Disk Libraries). Now they 
have OEM'd Quantum's VTL software they have de-dupe on there. However, at the 
moment, they do not have the storage node capability for NetWorker, ironically 
only NetBackup.> > > > > It may also be possible to use something like the 
Cypress (GreenBytes) NAS and use its internal de-dup/compress for adv_file 
devices (over iSCSI). Networker wouldn't know, or care.> > 
http://green-bytes.com/cypress.html> > We're trying to get one here in order to 
test that theory, since it *may* be able to replace the two *racks* of 
StorageTek Flex disk we use for adv_file today (we have a Tier 4 DBO).> > Of 
course, the sales folks got real silent when I mentioned using it in 
environments with pre-compressed data (our Sybase dumps, which is about 20 TB 
currently - about half the 'real' disk space of the Thumper chassis that 
Cypress uses). I wanted to know how their de-dup extensions to ZFS would work 
out here, since it was a proprietary change to the code.> > --TSK> > 
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