here is my 3 cents: In two companies i worked for, i designed similiar servers.
1. i wanted to have as less as a down time, and i didn't want to buy another server just to sit and wait for a failure, so i decided it should work on any pc with any raid controller - i decided to do the raid in software, so it will be hardware independant - in case of hardware failure - just get any pc with any raid controller ( the disks may even be connected via usb if you do not have a raid controller) and everything is up in minutes. 2. I wanted to have snapshots like in a net-app - making snapshots every hour or so. using the most up to date redhat distributions of that time - when creating a snapshot, once in a while the server got locked (dead). i tried it again when LVM2 was officially released, and got similiar results. so as they say "once bitten, twice shy" - I will take a lot of proof LVM is stable enough for snapshots, before i try it again. 3. linux caches the disk data before it writes it to disk. this is very good for performance, but may create a big data loss in case of power failure... cheers, erez. 2010/9/9 Hetz Ben Hamo <het...@gmail.com> > Hi people, > I'm planning to add some big storage solution to my VPS > business<http://hetz.biz>. > I did some checking and calculated the costs, and figured out that if I want > to have a decent 12TB solution NAS box, it would be best if I would roll my > own. (12 TB before all the RAID stuff, after that it would lot less). All > other solutions are very expensive (example: IBM EXP 3000 costs here 6K nis > without a single hard disk). > > I'm planning to use hardware based RAID card, minimal Linux distribution > and have some offers like iSCSI, NFS, CIFS - the usual suspects. > > My question is: since I'll use hardware RAID card, which processor and how > much RAM should I put in such a machine? Xeon is overkill IIRC. > > What do you suggest? > > Thanks and Shana Tova > Hetz > > -- > my blog (hebrew): http://benhamo.org > Skype: heunique > MSN: hetz-b...@benhamo.org > > _______________________________________________ > Linux-il mailing list > Linux-il@cs.huji.ac.il > http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il > >
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