Date: Thu, 28 Oct 2004 09:30:41 +0530 From: Subhro <subhro.kar@gmail.com> To: "Thordur I." <thib@mi.is> Cc: questions@freebsd.org Subject: Re: Software or hardware RAID1. (gstripe) Message-ID: <b2807d0404102721006715aa7b@mail.gmail.com> In-Reply-To: <412FAA46.70105@mi.is> References: <412FAA46.70105@mi.is>
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On Fri, 27 Aug 2004 21:40:22 +0000, Thordur I. <thib@mi.is> wrote: > I=B4m currently trying to decide upon a sultion on how to go about keepin > my data safe. RAID 5 is your best bet. RAID 1 Just ensures mirroring. While RAID 5 can actually rebuild volumes. > Let=B4s say that I have 2x 120Gb (ad1 and ad2) disk. I stripe them wich > should give something like /dev/stripe/foo (either with gstripe or a > hardware raid controler.) You get that strip device only if you use a softwre RAID. If you ues a RAID controller card, the whole RAID is completely transparent to the OS. >=20 > Now I fill this striped volume with data, and ad1 dies. > What happen=B4s ? > Does gstripe alert my that ad1 has died and will I still be able to > access /dev/stripe/foo ? You don't need to care about the striping, as both the Disks are exact clones of each other. So you can simply pull out the healthy disk and start using it as a single drive OR you can push in another healthy disk to replace the dead one and rebuild the volume. However if you are using a RAID controller card, the hardware would do the rebuilding for you. Refer to the Vinum volume manager section of the handbook. > PS: CC my for I=B4m not on the list. (Btw, do list members consider this = a > bother for if so I would just subscripe to the list (currently though > I=B4m supscried to what I think are to many lists :)) This is an open list so anyone may subscribe. BTW I personally feel its worthwhile to subscribe even if you dont want or not capable to asnwer questions because you can learn from others problems and save hours of troubleshoting later. You can also live with a scalp full of hair :-). Regards S. --=20 Subhro Sankha Kar School of Information Technology Block AQ-13/1 Sector V ZIP 700091 India
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