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Windows Thread, Opinions of Raid set up for new server. in Technical; We are currently looking to buy a new server and would like opinions on our raid options. The servers will ...
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    tosca925's Avatar
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    Opinions of Raid set up for new server.

    We are currently looking to buy a new server and would like opinions on our raid options. The servers will be a web server hosting sites/blogs/etc and possible streaming videos at a later date.

    We are looking at the Dell 2950 which will hold 6 discs. Our dilemma is what to do. We thought of having 2 73gb 1500rpm discs mirrored for the OS and 4 300gb SAS disc in a Raid 5 config set as full 4 disc raid or have a hot swap drive and loose a bit of storage.

    We cant quite decide what to do. Given the sample sec above what would you suggest for the best?

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    Re: Opinions of Raid set up for new server.

    Personal Choice - but I would opt for a RAID 5.
    I take it you are talking about using a hardware controller for this ? A software RAID 5 with your large disks may cause a general slowlness of data - something you don't want if you are going to be streaming video.
    You could be flash and go for a multiple nested RAID if the controller supported it.....

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    Re: Opinions of Raid set up for new server.

    RAID 5 for me as well, based on a good hardware controller as has been said already.

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    Re: Opinions of Raid set up for new server.

    Yea raid 5 for your setup.

    To gain from more "exotic" forms of raid like 10 you need to be working with twice as many discs than you are. 5 on a good hardware controller with SAS drives will be plenty fast for your needs.

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    Re: Opinions of Raid set up for new server.

    If you do RAID 5, make sure you get a battery backup on the RAID controller. This protects the write cache in the event of a disk or power failure. We have been sold a couple of servers with RAID 5 on which the write cache was disabled due to lack of a battery module. This slows down write performance considerably.

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    Re: Opinions of Raid set up for new server.

    Poweredge 2800 with 6 x 136gb drives I think they are.

    What are you going to do about backup? sure raid5 protects you from drive failure but not from corruption however caused.

    Ben

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    Re: Opinions of Raid set up for new server.

    I agree

    Raid 1 for OS disk

    and depending on support either

    other 4 Raid 5 with 4 hour response or

    3 Raid 5 and hot swap if you have less support

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    Re: Opinions of Raid set up for new server.

    I have the x 4 Dell 2900's with 2 disk mirrored OS and and 3 disk RAID 5 and there all sweet as a nut. Nice bits of kit IMO

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    Re: Opinions of Raid set up for new server.

    I went a bit overkill with this and with the 4 drives had two sets of two combined as a stripe array then mirrored one set of two to the other backups are of course made using Veritas and Quantum LTO3 drive. I think I have about 8 slots for HDDs spare in the DAS unit.

    Wes

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    Re: Opinions of Raid set up for new server.

    Hello to everyone (my first post here )

    Personally would go with mirror for system and RAID 5 for data
    + get one spare drive, test it and put on a shelf. If something ever
    goes wrong you don't have to panic for replacement (that's if budget will
    allow for this).

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    Re: Opinions of Raid set up for new server.

    Cheers for opinions, I'll let you know what we order.

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