From: Michael Schmolders (M.Schmolders@HRZ.UNI-DORTMUND.DE)
Date: Wed Jan 28 2004 - 09:27:01 EST
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Holger.VanKoll@SWISSCOM.COM schrieb:
~ > a p650 has 2 internal scsi-controller.
|
| I noticed that on all of my p650 the 2 internal disks (rootvg) are
| connected to the same controller. Nothing is connected to the 2nd
| controller.
|
| If there are external (non ssa, non san) disks, there is a 3rd and 4th
| scsi-controller to which the disks are connected to.
|
| I see no point in connecting both rootvg-disks to the same controller as
| long there is an unused 2nd controller; neither regarding availability
| nor performance.
|
| But I dont know if this setup is shipped from IBM like this or if it is
| done somewhere @ ibm in my country.
|
| So, could you please tell me if your p650 have the same setup?
|
| If anybody got an idea about any advantage with this setup, please let
| me know.
Hi Holger,
yes, an equivalent configuration in our 650 (7038-6M2):
4 internal disks at 1Z-08-00-x,0 x=8,9,10,11
2 Wide/Ultra-3 SCSI I/O Controller at 1Z-08 and 1Z-09, both "Available"
Viele Grüße - Yours sincerely
Glück Auf
Michael Schmolders
_._. .._
E-Mail: M.Schmolders@HRZ.Uni-Dortmund.DE
Phone: ++49 231 755 2717
http://www.hrz.uni-dortmund.de/Personal/Schm
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