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91 posts

Master Geek

Topic # 85671 23-Jun-2011 09:29
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When whs2011 finally arrives, I am going to install it in my current whs1 box.  Spinning away in that box currently unused is a dell perc 5/i with 4 one TB hard drives. in a RAID 5 configuration.  I was going to install the OS on this using the EFI bios system on the intel motherboard I happened to have in there, but I have chanced upon a few posts suggesting that putting the OS on the Raid array is a bad idea.  Would I then be better server to get a small fast HD for the OS (perhaps even an SSD from an older genration) and have the Raid array as storage only?

Cheers Ivan

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Microsoft NZ

  Reply # 485134 23-Jun-2011 19:04
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if something goes wrong, raid-5 can be a PITA, especially if your mobo dies and you have to try mount the raid array somewhere/somehow else. it also slows down some operations without enough caching and spindles. RAID-1 is much safer, although you do lose a bit more space accross 4 spindles (1/2 cap lost, instead of 1/3)

personally, i tend to stick to RAID-1 for home stuff, occaisionally raid-0, and only use raid-5 (or 6) in high performance commercial kit.

Technical Evangelist
Microsoft NZ
Twitter: @nzregs

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