4 Comments on “Which type of I/O refers to the number of I/O requests the array controller sends to the drives, including RAI”

1. Md. Nur Islam says:

   May 18, 2015 at 12:11 pm

   Ans. A

   
   
   
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   1. Md. Nur Islam says:

      May 18, 2015 at 7:25 pm

      Yes boss B Ans Right

      
      
      
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2. Md. Sunyuzzaman Chowdhury Suny says:

   May 18, 2015 at 1:46 pm

   B
   Explanation:Physical and logical I/O
   To optimize the storage subsystem, it is important to understand the difference
   between physical and logical I/O.
    Physical I/O — Refers to the number of I/O requests the array controller sends
   to the disk drives, using the array controller as the reference point. This
   calculation includes RAID overhead when applicable.
    Logical I/O — Refers to the number of I/O requests the operating system or the
   application sends to the array controller for processing. It does not include RAID
   overhead because hardware RAID is transparent to the operating system and
   application.
   Reference: Industry Standard Architecture – Student Guide 2 – Page 240

   
   
   
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3. CANUSA says:

   October 1, 2015 at 12:55 pm

   the AmeriCanadian hath found:

   http://www.dennietidwell.com/HPTroublesStorage.htm

   Read.

   
   
   
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