T7910 12GB/s SAS without Raid

Can I achieve 12GB/s simply by plugging a SAS HDD into SAS0 without a raid configuration?

Thanks.

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  • Colin Benn Are you referring to read/write speeds?

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  • Read/writes can vary.  The manner which people use the 12GB/s is more of a standard also like 6GB/s for Sata.  Isn't it the maximum transfer rate of data?

    Thanks

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    • Colin Benn Yes, 12GB/s is the advertised max transfer rate using the LSI 3008 onboard controller.

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  • So, the original Q was: do I need to have a raid config to achieve the 12GB/s or can I just simply plug a SAS drive into SAS0 and get 12GB/s?

    Thanks.

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  • Hello,

    I have 4 X 6TB SAS Enterprise drives in my T7910.  I'm using RAID 10.

    When I run the Crystal Disk Mark 6 benchmark, I got 146MB/sec or so, as I remember.

    Bert.

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  • So I guess the answer is that I don't need a raid config to achieve 12GB/s?

     

    Seeing you are using SAS drives....HGST suggests a 60 second shutdown process.  Do you do something like that before shutting down your workstation?

    Thanks.

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    • Colin Benn Hi,

      I'm not familiar with the Hitachi Global Storage Technologies recommendation for a 60 second shutdown process.  I'm not sure how I'd implement, in Windows, a 60 second long shutdown process.  While you could stop programs, etc 60 seconds before telling Windows to shutdown, there is nothing to stop Windows, a service, etc from reading or writing to the RAID during those 60 seconds.  If HGST is saying nothing new is to start during those 60 seconds, then only the operating system can quiesce the RAID - not the end-user.

       

      Where can I read up on this recommendation by the HGST group?

       

      Presently, I don't do anything special other than insure I manually end / terminate any program and/or services using the SAS drives before shutting down Windows.

       

      The seller (Tech Support Direct on Amazon) didn't give me any special instructions about shutting down the T7910.  They did give me other special instructions on the T7910, such as NEVER, EVER change UEFI to legacy, unless you DO want to brick Windows 10.

       

      Take care and let me know how it turns out.

      :)

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    • Bertram Moshier 

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    • Bertram Moshier 

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  • Hi Bert.

    Thanks for the feedback.....you must be busy.

    The downloaded manual for HGST he10 10TB has details of shut down process.

    I have started looking into LSI 3008 commands.....expecting to see some control for hdds.

     

    Thanks again

     

    Colin

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  • Hi Bert.

    Contacted WD.  Here are their recommendations:

     

    Thank you for contacting HGST a Western Digital brand, Customer Service and Support. My name is Rizvi. It's my pleasure to assist you today. Here is your case number for future reference: 103019-14218829.

     

    We understand that you want to perform the device shutdown in your Windows 10 pro workstation.

     

    We would like you to follow the following steps by power off the device.

     

    • Access BIOS
    • Issue on of the following commands: Standby OR Standby immediate OR Sleep
    • Wait until the Command Complete status is returned (around 60 sec).
    • Terminate power to HDD.

    Looks like you should shut them down appropriately. 

    Cheers

    Colin

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