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Snap Server / NAS / Storage Technical Goodies The Home for Snap Server Hacking, Storage and NAS info. And NAS / Snap Classifides |
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04-28-2008, 06:53 AM | #1 |
Cooling Neophyte
Join Date: Apr 2008
Location: Canada
Posts: 4
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Guardian O/S 4.4 and EDR software
Okay all you snap guru's. I currently have EDR up and running between two Snapserver 520's with Guardian O/S 4.4
Does anybody have any information of how edr runs underneath? The reason I'm asking is that EDR replicates end to end but it replicates differential data. My tech and I are having an argument: He thinks that the EDR software scans all of the files on the SNAP builds a manifest and must use some form of date change in order to determine if the file has changed. I think the the SNAP tracks files that are written to storage creates a manifest, and replicates the files that have changed down to the second SNAP based on what is in the manifest. Are we both wrong ( could be!) is it similar to Rsync? anybody out there set us straight? Thanks snap_guy |
04-28-2008, 12:10 PM | #2 |
Thermophile
Join Date: Jul 2005
Location: Plano, TX
Posts: 3,135
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Re: Guardian O/S 4.4 and EDR software
I'm not running EDR, but on startup it has to scan and copy the files. So he's right. But once the initial server is duplicated it then monitors for changed files then copies them. It's not any different than a glorified backup program.
So your both are right.
__________________
1 Snap 4500 - 1.0T (4 x 250gig WD2500SB RE), Raid5, 1 Snap 4500 - 1.6T (4 x 400gig Seagates), Raid5, 1 Snap 4200 - 4.0T (4 x 2gig Seagates), Raid5, Using SATA converts from Andy Link to SnapOS FAQ's http://forums.procooling.com/vbb/showthread.php?t=13820 |
04-28-2008, 12:12 PM | #3 |
Cooling Neophyte
Join Date: Apr 2008
Location: Canada
Posts: 4
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Re: Guardian O/S 4.4 and EDR software
Thankyou very much, That would make sense as it would have no reference on the second machine if it had nothing copied over to it on the first replication.
Thanks a heap |
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