your failure proof scheme?

Discussion in 'Windows Small Business Server' started by Martin_C, Apr 13, 2006.

  1. Martin_C

    Martin_C Guest

    Is there a good way to implement failure proof scheme? or any good practices
    for raid? I'm currently having a lot of problem with raid failure and
    everytime it happens my server goes down for 24hrs which is very very bad.

    I'm currently using a raid card for sata drives LSI 1506 running on raid 10
    My partitions on 4 HD (200GB each) raid 10 are:
    C Drive (OS, Exchange, SQL, Shareporint) 100 GB
    D Drive Profile (stores roaming profile) 50 gb
    E Drive Data (share folders for all users) 250gb

    However, I wonder what would be the best way to run RAID on this 3 partitions?
    Option A (6 HD)
    - Hardware RAID 10 (4 HD 200GB/each)
    - Software Raid 1 on C, D and E on 2HD on Hardware Raid 0

    Option B (7 HD)
    - Hardware RAID 1 on C Drive (2 HD 200GB/each) (or 2 Raptor HD 74gb/ each
    to increase speed)
    - Hardware RAID 0 on D, E Drive (2 HD 200GB/each)
    - Software RAID 1 on C Drive (every 2 days) (1 HD 200GB )
    - Ntbackup Incremental backup on D and E (every day)(1 HD 500 GB)
    - Ntbackup Full backup every week (1 HD 500 GB)

    Option C (6 HD)
    - Hardware Raid 0 + 1 (4 HD 200GB/each)
    - Software Raid 1 on C, D and E on 2HD on Hardware Raid 0

    What I hate the most about hardware RAID is once I remove the hotswap and
    put one back the OS goes blue screen and OS get corrupted which leaves with
    non useable server. Hence, I want to do a better job and not just rely on
    hardware RAID.

    I need some good suggestion.
     
    Martin_C, Apr 13, 2006
    #1
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  2. Hi Martin,

    Thanks for posting here.

    From your post, I understand that you want to know how to implement RAID
    system. If I am off base, please feel free to let me know.

    In general, hardware-based RAID offers performance advantages over Windows
    Server software-based RAID. For example, you can improve data throughput
    significantly by implementing RAID 5 through hardware that does not use
    system software resources. This is accomplished by using more disks at a
    given capacity than in conventional storage solution. Read/write
    performance and total storage size can be further improved by using
    multiple controllers. If you find the Blue-screen when you use Hardware
    RAID, you can contact the Hardware vendor or our Customer Support Service
    (CSS) via phone to get the problem fixed in a more efficient manner. For
    the CSS contact information, please visit:

    http://www.microsoft.com/services/microsoftservices/srv_support.mspx

    If you want to know which method can be used to implement RAID system in
    your environment, please consider the following facts:

    RAID 10:
    -------------------
    Advantages:

    1. RAID 10 is implemented as a striped array whose segments are RAID 1
    arrays

    2. RAID 10 has the same fault tolerance as RAID level 1

    3. RAID 10 has the same overhead for fault-tolerance as mirroring alone

    Excellent solution for sites that would have otherwise gone with RAID 1 but
    need some additional performance boost

    Disadvantages:

    1. Very expensive / high overhead

    2. All drives must move in parallel to proper track lowering sustained
    performance

    3. Very limited scalability at a very high inherent cost

    RAID 0+1:
    --------------------
    Advantages:

    1. RAID 0+1 is implemented as a mirrored array whose segments are RAID 0
    arrays

    2. RAID 0+1 has the same fault tolerance as RAID level 5

    3. RAID 0+1 has the same overhead for fault-tolerance as mirroring alone

    Excellent solution for sites that need high performance but are not
    concerned with achieving maximum reliability

    Disadvantages:

    1. RAID 0+1 is NOT to be confused with RAID 10. A single drive failure will
    cause the whole array to become, in essence, a RAID Level 0 array

    2. Very expensive / high overhead

    3. Very limited scalability at a very high inherent cost

    4. All drives must move in parallel to proper track lowering sustained
    performance

    For more information about RAID, please refer to the following web link:

    http://www.acnc.com/04_00.html

    Warning: This response contains a reference to a third party World Wide Web
    site. Microsoft is providing this information as a convenience to you.
    Microsoft does not control these sites and has not tested any software or
    information found on these sites; therefore, Microsoft cannot make any
    representations regarding the quality, safety, or suitability of any
    software or information found there. There are inherent dangers in the use
    of any software found on the Internet, and Microsoft cautions you to make
    sure that you completely understand the risk before retrieving any software
    from the Internet.

    I hope the above information helps.

    Have a nice day.

    Best Regards,

    Steven Zhu
    MCSE
    Microsoft Online Partner Support
    Get Secure! - www.microsoft.com/security
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    Steven Zhu [MSFT], Apr 14, 2006
    #2
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  3. Martin_C

    Martin_C Guest

    My updates:

    I migrated from RAID 10 to

    RAID 1 (two Raptor 150GB) OS partition
    RAID 5 (3 200Gb Maxtor SATA + 1 Hotswap) DATA and Profile partition
    JBOB 250GB Weekly FULL backup
    JBOB 200GB Daily Backup of OS partition.
     
    Martin_C, May 9, 2006
    #3
  4. Hi Martin,

    Thanks for taking time to respond.

    However, this RAID is not related to SBS software RAID at all; then I
    suggest you contact the third-party Hardware vendor.

    Thank you for your patience and understanding. If you have any other
    technical questions in the future, please do not hesitate to contact us by
    posting in our newsgroups. It is always our pleasure to be of assistance.

    Have a good day.

    Best Regards,

    Steven Zhu
    MCSE
    Microsoft Online Partner Support
    Get Secure! - www.microsoft.com/security
    ======================================================
    PLEASE NOTE the newsgroup SECURE CODE and PASSWORD were
    updated on February 14, 2006.? Please complete a re-registration process
    by entering the secure code mmpng06 when prompted. Once you have
    entered the secure code mmpng06, you will be able to update your profile
    and access the partner newsgroups.
    ======================================================
    When responding to posts, please "Reply to Group" via your newsreader so
    that others may learn and benefit from this issue.
    ======================================================
    This posting is provided "AS IS" with no warranties, and confers no rights.
    ======================================================
     
    Steven Zhu [MSFT], May 11, 2006
    #4
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