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Raid 1 and Dual core

By Kebtiz
Dec 17, 2008
  1. I was reading a few articles about Raid 1 and the term multi-threading kept coming up, and I couldn't get a completely solid answer as to performance, not exacts just generals.

    Ok, as I understood it, a 2 drive Raid 1 while running a single core processor is very similar performance level to running a single hard drive with data security, but while under dual core it has a higher level of performance due to the processor multi-threading in between the 2 drives resulting in faster read times.

    Am I close? I tried but I was a little over my head on the matter.

    If there is an increase in performance my goal is this setup:
    2x Seagate Barracuda 500GB 7200 RPM 32MB Cache paired with
    AMD Athlon 64 X2 6000+ 2 x 1MB L2 Cache 125W Dual-Core Processor
     
  2. jobeard

    jobeard TS Ambassador Posts: 9,317   +618

    raid-1 with single core processor is anywhere near a dual core system without raid-1.

    Raid-1 improves I/O performance by overlapping (or performing) multiple arm seeks
    at the same time.
    This is trivial compared to the constant improvement provided by a dual core processor.
     
  3. Kebtiz

    Kebtiz TS Rookie Topic Starter

    Sorry, you lost me a little, so basically you are saying that performance wise there is little improvement with Raid 1 if you have dual core?

    Or that the performance increase is similar to that of switching to dual core over single core,
    ie - a Single core without raid1 < Single core with raid 1 = Dual core without raid 1 < Dual Core with raid 1?
     
  4. jobeard

    jobeard TS Ambassador Posts: 9,317   +618

    NEVER -- not even close.
     
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