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A PC configured with RAID1... slower than a regualr PC?

Discussion in 'Hardware' started by senshi, Feb 8, 2005.

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  1. senshi

    senshi Thread Starter

    Oct 19, 2004
    Say there was 2 computers exactly the same.

    One was RAID1 hard drive configuration.

    The second, a regular dual hard drive PC.

    My question is, does the RAID1 configuration actually make the PC slower since everything you do needs to be done twice?
  2. Arcadion


    Sep 1, 2004
    In theory, performance should be about the same provided that the two drives in the RAID-1 array are on separate channels. The data is read/written to both drives simultaneously, but if they're on the same channel then you will get a big performance drop. Of course this is only theory, and you would need to set up such a system and benchmark it to be sure.
  3. JohnWill

    JohnWill Retired Moderator

    Oct 19, 2002
    Actually, RAID-1 will slow a system down at times with unsynchronized spindles. Any write operations will be slower than writing to a single drive. The upside is that read operations can be faster if the RAID controller is smart enough, since it has two identical copies of data, and it can read different parts simultaneously.
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