[CentOS] Re: Some 3Ware questions
Ugo Bellavance
ugob at camo-route.comWed Feb 8 17:42:55 UTC 2006
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Bryan J. Smith wrote: > Peter Arremann <loony at loonybin.org> wrote: >> When initializing a raid 1, the controller wipes out all >> data according to the manuals. Every now and then you hear >> from people that say that the controller copies everything >> from disk1 to disk2 and if your IDE controller sector >> mapping matches what the 3ware controller does, you can >> keep your data in tact. > > Actually, for RAID-1, 3Ware does _not_ using additional > blocking/organization, and does a direct mirror. I.e., the > disks _can_ be used "normally." So, does that mean that one can install an OS on one drive, connected to the MB's IDE controller, then when the 3ware arrives, just connect the 2 drives to the 3ware and tell the 3ware to use disk 0's data, mirror it over to disk1 and make a RAID 1 out of that? Regards, > > For RAID-0, 10 and 5, 3Ware uses 32KiB blocking and the > volumes are completely _unusable_ by anything else AFAIK > (maybe LVM2-MD?). > > > > -- Ugo -> Please don't send a copy of your reply by e-mail. I read the list. -> Please avoid top-posting, long signatures and HTML, and cut the irrelevant parts in your replies.
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