Moving to RAID

Discussion in 'OT Technology' started by DigiCrime, Sep 18, 2009.

  1. DigiCrime

    DigiCrime If Only!

    Joined:
    Oct 25, 2001
    Messages:
    32,996
    Likes Received:
    100
    Location:
    St. Louis
    Not concerned about parity nor mirroring but which will give me the best read/write ? I have two 500gig sata drives I was going to use RAID 5 but you need three disks for that setup right ? Or would RAID 0 work?
     
  2. lowfat

    lowfat 24/Mac/SciFi/PC Crew OT Supporter

    Joined:
    Oct 27, 2003
    Messages:
    63,949
    Likes Received:
    0
    Location:
    Grande Prairie, AB, Can
    RAID5 is parity and very slow at writing. RAID0 is what you want for performance.
     
  3. DigiCrime

    DigiCrime If Only!

    Joined:
    Oct 25, 2001
    Messages:
    32,996
    Likes Received:
    100
    Location:
    St. Louis
    thankya
     
  4. deusexaethera

    deusexaethera OT Supporter

    Joined:
    Jan 27, 2005
    Messages:
    19,712
    Likes Received:
    0
    RAID5 parity is not slow at writing. RAID3 is slow at writing, as a tradeoff for faster speed at reading. RAID5 is much more balanced. With any RAID, the single most important factor in determining overall speed is the speed of the individual hard drives.

    RAID0 is nothing more than an opportunity to lose all your data as soon as there's a single hiccup.
     
  5. dissonance

    dissonance reset OT Supporter

    Joined:
    May 23, 2006
    Messages:
    5,652
    Likes Received:
    1
    Location:
    KS
  6. SeeVinceRun

    SeeVinceRun Currently In Prison OT Supporter

    Joined:
    Apr 11, 2005
    Messages:
    1,124
    Likes Received:
    0
    Location:
    Kansas City, MO
    RAID 0 is great for the speed, as everyone else has said. Just be sure, without fail, to have it auto backup every week to an external.
     
  7. lowfat

    lowfat 24/Mac/SciFi/PC Crew OT Supporter

    Joined:
    Oct 27, 2003
    Messages:
    63,949
    Likes Received:
    0
    Location:
    Grande Prairie, AB, Can
    Without an IO processor that can do XOR parity calculations, RAID5 is extremely slow.

    W/ ICH*R, if write caching isn't enabled you'll be lucky to get 50MB/s.
     
  8. Hate Crime

    Hate Crime Don't Hate OT Supporter

    Joined:
    Mar 12, 2006
    Messages:
    5,255
    Likes Received:
    0
    Location:
    Minnesota
    :werd:
     
  9. DigiCrime

    DigiCrime If Only!

    Joined:
    Oct 25, 2001
    Messages:
    32,996
    Likes Received:
    100
    Location:
    St. Louis
    OS can be replaced so parity or mirroring won't really be an issue. The information that can't be replaced is backed up onto another drive so if something goes wrong with the raid/drive no biggie back up is in place. However I think I've tried this before but I can't tell if a drive is having a problem or not using conventional smartctl tools because its not design to see a RAID configuration so what can you use to monitor the status of your drive/raid ? This is a desktop computer and has onboard raid built into the motherboard
     
  10. lowfat

    lowfat 24/Mac/SciFi/PC Crew OT Supporter

    Joined:
    Oct 27, 2003
    Messages:
    63,949
    Likes Received:
    0
    Location:
    Grande Prairie, AB, Can
    I don't think viewing the individual drive SMART is possible w/ Intel RAID.
     
  11. DigiCrime

    DigiCrime If Only!

    Joined:
    Oct 25, 2001
    Messages:
    32,996
    Likes Received:
    100
    Location:
    St. Louis
    been out most of the day just now getting around to it. anyway I got the drives in and when I bring up the raid utility it doesn't allow me to setup any raid options just shows as jbod. Even if I delete a LD and go back to create, JBOD is the only option. why is that?
     
  12. lowfat

    lowfat 24/Mac/SciFi/PC Crew OT Supporter

    Joined:
    Oct 27, 2003
    Messages:
    63,949
    Likes Received:
    0
    Location:
    Grande Prairie, AB, Can
    what board are you using?
     
  13. DigiCrime

    DigiCrime If Only!

    Joined:
    Oct 25, 2001
    Messages:
    32,996
    Likes Received:
    100
    Location:
    St. Louis
    Gigabyte GA-MA78GM-US2H
     

Share This Page