Let me clarify about the increasing capacity. 146 GB should be more than enough for our needs for the foreseeable future. I priced a system with this capacity for a Raid 1 using two 146 GB drives, and systems with 3 x 73 GB and 5 x 36 GB drives using Raid 5. Both of the Raid 5 configurations cost more than the Raid 1, I presume because the cost savings of the smaller drives was not enough to offset the cost of the extra drive I would have to have with Raid 5.
If down the line I wanted to increase our storage capacity, I was wondering if I could add a third 146 GB drive and make it a Raid 5. My big question was whether the same Raid controller could do either Raid 1 or 5. I kind of assumed I would have to rebuild the entire system to do this, which you verified with your email. So that is what I meant. I hope it makes sense? Thank you very much for your reponse. It's been a big learning experience for me, and I appreciate the help. With kind regards, Peter, hieromonk ----- Original Message ----- From: "Michael George" <[EMAIL PROTECTED]> To: "Hieromonk Peter" <[EMAIL PROTECTED]> Cc: <ltsp-discuss@lists.sourceforge.net> Sent: Friday, August 11, 2006 8:23 PM Subject: Re: [Ltsp-discuss] Raid 1 or Raid 5? New server advice. > > > Hieromonk Peter wrote: >> Thank you all very much for your help, advice and information. I >> appreciate >> it very, very much. >> >> I've read more about Raid in the past few days than I ever wanted to, >> []:-) >> and I think I am still leaning towards sticking with a Raid 1. 146 GB >> should be plenty of space for us for quite some time, so it doesn't make >> sense to go with a Raid 5. A Raid 5 costs more, and would only really >> benefit us if we were ever needed to increase our storage capacity. > > I am not sure what you mean there about a benefit only if you needed to > increase capacity... Even if you have a RAID 5 Array on a 3Ware card, > you cannot just add drives to it. You would have to remove and rebuild > an array (see below). To add capacity to a system without moving the > data off of and back onto the drives, you would need something like the > Linus Volume Manager, which can use RAID as its underlying storage if > you would like... > >> >> ---- Which leads to another question: >> >> If I have a Raid controller set up to handle the drives as a Raid 1, can >> I >> later use the same controller and have it handle the drives as a Raid 5? >> It >> would be fine with me if I had to rebuild the system to do this. Just >> curious of what my options are with that in the future. It seems to me >> that >> it should, because it is the same controller Dell sells for both >> configurations. > > If you use a 3Ware card with >2 drive interfaces, you can make it a RAID > 1 or RAID 5. You can change it later, but that will wipe out all your > data. So, if you use the same controller, you will need to reliably > move all the data to another medium, remove the array, and rebuild it as > a RAID 5. > > -- > -Michael George > Ideal Solutions, LLC > > ------------------------------------------------------------------------- > Using Tomcat but need to do more? Need to support web services, security? > Get stuff done quickly with pre-integrated technology to make your job > easier > Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo > http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 > _____________________________________________________________________ > Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto: > https://lists.sourceforge.net/lists/listinfo/ltsp-discuss > For additional LTSP help, try #ltsp channel on irc.freenode.net > ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _____________________________________________________________________ Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto: https://lists.sourceforge.net/lists/listinfo/ltsp-discuss For additional LTSP help, try #ltsp channel on irc.freenode.net
