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  1. #1
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    Raid 1 Vs Raid 10

    Hi

    we need to but new server we have think on Pe 2950 with 6Hd 300Gb 15k rpm in Raid 10. What do u think? better to go with raid 1? This server will use for hosting platform, all the service httpd, email, mysql will run on the same server.

    Thanks

  2. #2
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    Quote Originally Posted by adapter View Post
    Hi

    we need to but new server we have think on Pe 2950 with 6Hd 300Gb 15k rpm in Raid 10. What do u think? better to go with raid 1? This server will use for hosting platform, all the service httpd, email, mysql will run on the same server.

    Thanks
    Raid 10 will give a performance gain over raid 1 while keeping redundancy, I would go raid 10 for sure
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  3. #3
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    What makes you think it would be better to go with RAID 1?


  4. #4
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    Quote Originally Posted by daejuanj View Post
    What makes you think it would be better to go with RAID 1?
    Well depends, RAID 1 can give you more space and redundancy and RAID 10 can give you less space, redundancy and performance. But I'm sure the OP just doesn't know the different between the two .

    So depends on what type of hosting the client is using the server for (multimedia, static pages, heavy database, etc.). Depending on the usage, sometimes the performance of RAID 10 will not make that big of a difference but the additional space is a lot to gain. Just listing the services the client is using will not help in accurately choosing which RAID configuration to use.
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  5. #5
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    Quote Originally Posted by Anantha View Post
    Well depends, RAID 1 can give you more space and redundancy and RAID 10 can give you less space, redundancy and performance.

    So depends on what type of hosting the client is using the server for (multimedia, static pages, heavy database, etc.). Depending on the usage, sometimes the performance of RAID 10 will not make that big of a difference but the additional space is a lot to gain. Just listing the services the client is using will not help in accurately choosing which RAID configuration to use.
    Agreed. But he's going to be using it for hosting. So (multimedia, static pages, heavy database, etc.).

    Safe to go with RAID 10


  6. #6
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    Yup, that would be the best choice IMOT.
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  7. #7
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    Quote Originally Posted by daejuanj View Post
    Agreed. But he's going to be using it for hosting. So (multimedia, static pages, heavy database, etc.).

    Safe to go with RAID 10
    I would never use raid 0 in a hosting environment unless it was a clustered solution, one drive fails your up a creek.

    Go raid 10 its your best bet. Raid 0 if you have bad *** backups and I mean bad *** R1Soft type backups with bare metal restore features, otherwise raid 10
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  8. #8
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    Quote Originally Posted by Anantha View Post
    Well depends, RAID 1 can give you more space and redundancy and RAID 10 can give you less space, redundancy and performance. But I'm sure the OP just doesn't know the different between the two .
    Um, RAID 1 and RAID 10 provide an equal precentage of usable drive space. Using the minimal number of drives at least.

    RAID 1 with two drives...you see the space of one drive.

    RAID 10 with four drives...you see the space of two drives.
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  9. #9
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    Quote Originally Posted by eviltechie View Post
    Um, RAID 1 and RAID 10 provide an equal precentage of usable drive space. Using the minimal number of drives at least.

    RAID 1 with two drives...you see the space of one drive.

    RAID 10 with four drives...you see the space of two drives.
    Forget percentages, how is that equal in usable space?

    But compare with the number of drives the user said he was using and you will see for yourself the difference in usable space.
    Last edited by HNLV; 04-10-2008 at 04:27 PM.
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  10. #10
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    Quote Originally Posted by Anantha View Post
    Forget percentages, how is that equal in usable space?

    But compare with the number of drives the user said he was using and you will see for yourself the difference in usable space.
    Raid 1 2 x 250gb drives = 250gb space

    Raid 10 4 x 250gb drives = 500gb usable space

    Raid 0 2 x 250gb drives = 500gb usable space
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  11. #11
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    Quote Originally Posted by Jag-Nick View Post
    Raid 1 2 x 250gb drives = 250gb space

    Raid 10 4 x 250gb drives = 500gb usable space

    Raid 0 2 x 250gb drives = 500gb usable space
    You forgot to factor in partitioning.


  12. #12
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    Quote Originally Posted by Jag-Nick View Post
    Raid 1 2 x 250gb drives = 250gb space

    Raid 10 4 x 250gb drives = 500gb usable space

    Raid 0 2 x 250gb drives = 500gb usable space
    Ah, my bad.

    I actually knew that. I was sort of asking him a rhetorical question.
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  13. #13
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    Raid ten is mirroring two striped arrays. If n = size of one drive, then capacity will always be n / 2 * number of drives. Whether you use four drives or 20. you get 50 percent of the capacity of all you drives.

    Something to look at would be RAID 1+0 (not to be confused with 0+1). Its hard to find in a hardware controller, but way worth it. With six drives, you would have 3 separate mirrored segments, striped together. I believe performance will be a bit lower than than raid10, capacity will be the same, and it can sustain the loss of one drive from each of the raid one segments simultaneously without losing data. Thats 3 simultaneous drive failures for your situation vs 2 for RAID10.

    Like I said, that can be hard to find and costly to implement, so if in doubt, just go with RAID10. make sure you put each of the striped segments on a separate controller though.

  14. #14
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    Partitions are easy

    /boot 100 MB (Megabytes)
    /usr 8000 MB (Megabytes)
    /var 8000-25000 MB (Megabytes)
    /tmp 8000 MB (Megabytes)
    / 8000 MB (Megabytes)
    /home *Remaining Disk*
    swap @X Ram MB (Megabytes)

    Above is for cpanel

    Plesk is even simpler
    /boot 100 MB (Megabytes)
    /usr 8000 MB (Megabytes)
    /var *Remaining Disk*
    /tmp 8000 MB (Megabytes)
    / 8000 MB (Megabytes)
    swap @X Ram MB (Megabytes)
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  15. #15
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    nvm 1234567890
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