Item Subject: cc:Mail Text
     Art Bahrs wrote:
     >    I am figuring out how to add some drives to my 957 (SX type)...

     First, are you trying to add some drives or replace some drives?
     Looking at your internal configuration:

     Device Adapter(52) --- A1703-60003-SCSI SCSI
           Device(52.0.0) [ ldev 7 HPC1503A TAPE]
           Device(52.3.0) [ ldev 4 HPC2490AM DISK]
           Device(52.4.0) [ ldev 3 HPC2490AM DISK]
           Device(52.5.0) [ ldev 2 HPC3010M1 DISK]
           Device(52.6.0) [ ldev 1 HPC2474S DISK]
     Your disk drive slots are all taken up.  You have three places where
     disks can live.  Two of those will support either one full-height or
     two half-height, the other(top left as you're facing the 957) will
     hold either one full-height or one half-height.  There are three power
     connects on each side, so the maximum number of devices is three on
     each side(six).  As you're facing the 957, the right side supports two
     removable media(DAT and/or CD-ROM) devices on top, and either one
     full-height or two half-height disks on bottom(but the total number of
     devices on the right side can only be three).  The left side supports
     one disk(half- or full-height) on top and either one full-height or
     two half-height disks on the bottom.  Based on the disks you have,
     which generation they came from, and how they would "normally" be
     installed, I would guess(since you can't tell from an I/O config) that
     the physical layout is:

     ---------------------------------------------
             Front of 957

      C3010M1(FH)     DAT
                      Space for either DAT or CD-ROM


      C2490AM(HH)     C2474S(FH) [Could put two HH's here since
      C2490AM(HH)                 there's no CD or 2nd DAT]

      Power Supply    Power Supply
      --------------------------------------------

     To increase your internal disk capacity, your best bet would probably
     be to replace the C2474S with two half-height disks.  There are other
     possibilities but the iterations exceed my mental capacity and time at
     this moment.


     >    I am told by an HP Engineer that the UPS in my 957 will not be
     >enough for the new 4 GB drives (A3352A) should the AC fail...

     I don't understand this statement.  There is no UPS in a 957...there
     is a battery backup for memory.  If you do put a A3352A in your 957,
     then HP says you MUST use a UPS(external, of course) for your 957
     since the A3352A does not have the same power-fail recoverability as
     HP's older disks(I believe this is the 'sector atomicity' issue).


     Please feel free to add questions, comments, etc either through this
     list or directly to me at [log in to unmask]

     Jon Broz
     HP Cleveland(Since we got David Justice now, does the package also
                        include Halle Berry?)

     "My opinions...not HP's"