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RAID Setup

  • 06-02-2008 10:04pm
    #1
    requiem1
    Registered Users, Registered Users 2 Posts: 611 ✭✭✭


    Okay I have 2 X 200GB Samsung spinpoints and 2 X 160GB Seagate's and was thinking of placing the 2 samsungs in RAID 0(OS) and then placing the 2 seagates in RAID 0 as well.

    Then using a software RAID to backup the samsungs onto the seagates. Can anyone suggest a better solution cause i'm looking for a combination of both speed and security.

    Can I use them all in a RAID 5?


Comments

  • #2
    trellheim
    Registered Users, Registered Users 2 Posts: 5,967 ✭✭✭trellheim


    yes ... but you should do raid 10 instead for the highest speed and security.


    if you do a raid10 block you'll get max 320G but you'd be better doing it in hardware RAID10

    you don't mention the bus type ide sata scsi or whatever , or the model types of the drives and spins etc.


  • #3
    requiem1
    Registered Users, Registered Users 2 Posts: 611 ✭✭✭requiem1


    trellheim wrote: »
    yes ... but you should do raid 10 instead for the highest speed and security.


    if you do a raid10 block you'll get max 320G but you'd be better doing it in hardware RAID10

    you don't mention the bus type ide sata scsi or whatever , or the model types of the drives and spins etc.

    They're all SATA and 7200rpm, i can't remember the specific model numbers. If i put it in RAID 10 is that striping the two seagates and mirroring them with samsungs? or vice versa? cause the samsungs are faster performance wise


  • #4
    Khannie
    Registered Users, Registered Users 2 Posts: 37,485 ✭✭✭✭Khannie


    If you want to do raid 10, you should stripe a 200 and a 160, then mirror that with another 200 + 160. This will give you the most consistent performance. It's not an ideal scenario, but you will get plenty of speed out of it.

    The alternative is to use 3 drives in a raid 0 config (2 x 160 + 200), and keep the 4th one for backing up your OS and any important files. 3 drives in raid 0 would be very fast.


  • #5
    requiem1
    Registered Users, Registered Users 2 Posts: 611 ✭✭✭requiem1


    thanks for the opinions i would be interested more in performance but had always been under the illusion that you needed identical models to create a RAID but if i can use contrasting disks that'd be far better. In creating a 3 disk RAID 0 would i have to partition the 200GB to 160GB? or would i have a total volume of 520 GB?


  • #6
    Khannie
    Registered Users, Registered Users 2 Posts: 37,485 ✭✭✭✭Khannie


    it'd be 480G, 3 x 160. You'd lose 40G of storage, but given what you have, I wouldn't think that'd be a big issue.

    Just in case you're not aware of this: With a 3 drive raid 0 array, your chances of catastrophic data loss are 3 x what you would have with 1 drive. That's why I'm suggesting you hold back one drive for backup purposes.

    You could go with raid 5 and have the same amount of space with the redundancy that raid 5 offers and some very nice performance. I use raid 5 myself and love it (but not for my OS drive).


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