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тАО09-17-2008 06:49 AM
тАО09-17-2008 06:49 AM
My rx6600 server has 12 internal disks: 6 attached to a SAS controller and the other to the second SAS controller.
I want to move some disk drives from their slots to other slots. They all are attached to the same SAS controller.
There is only 1 disks used, containing HP-UX 11.23.
The SCSI address (0 to 5)of each disk displayed by ioscan is set by its slot number ?
How can I find out the slot numbers of the disks?
Thanx in advance
Solved! Go to Solution.
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тАО09-17-2008 06:59 AM
тАО09-17-2008 06:59 AM
SolutionThis thread may be of use:
http://forums11.itrc.hp.com/service/forums/questionanswer.do?threadId=1264797
Regards,
Phil
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тАО09-17-2008 09:59 AM
тАО09-17-2008 09:59 AM
Re: rx6600: drive slot numbers and SCSI address
# sasmgr get_info -D /dev/sasd0 -q raid
# sasmgr get_info -D /dev/sasd1 -q raid
"They all are attached to the same SAS controller." - not all! Some on the first, some on the second.
SAS disks and controllers behave different!
Even if you change a disk from one controller to another (same slot) you will get new device files, because this is bound to the WWID of the disk.
I would recommend to power down the server before you change the disk locations.
Let the already used disk at least connected to the same controller.
Hope this helps!
Regards
Torsten.
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тАО09-17-2008 10:16 AM
тАО09-17-2008 10:16 AM
Re: rx6600: drive slot numbers and SCSI address
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тАО09-17-2008 10:28 AM
тАО09-17-2008 10:28 AM
Re: rx6600: drive slot numbers and SCSI address
Hope this helps!
Regards
Torsten.
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those who understand binary, and those who don't.
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тАО09-17-2008 11:38 AM
тАО09-17-2008 11:38 AM
Re: rx6600: drive slot numbers and SCSI address
vg00: /dev/dsk/c1t3d0 and /dev/dsk/c2t3d0
vg01: /dev/dsk/c1t5d0 and /dev/dsk/c2t5d0
My problem is my box have different disk sizes and they have different target IDs. For example:
c1t3d0 146 GB
c1t5d0 146 GB
c2t3d0 73 GB
c2t5d0 73 GB
I want to swap 2 disks to get this:
c1t3d0 146 GB
c1t5d0 73 GB
c2t3d0 146 GB
c2t5d0 73 GB
If I swap them, will I get what I want?... Is the target ID set either according to the bay/slot or according to the WWN of the disk?
Thanx again
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тАО09-17-2008 11:53 AM
тАО09-17-2008 11:53 AM
Re: rx6600: drive slot numbers and SCSI address
I realized the examples are not right.
c1t3d0 146 GB
c1t5d0 73 GB
c2t3d0 73 GB
c2t5d0 146 GB
I'd swap c2t3d0 and c2t5d0 to get
c1t3d0 146 GB
c1t5d0 73 GB
c2t3d0 146 GB
c2t5d0 73 GB
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тАО09-17-2008 11:56 AM
тАО09-17-2008 11:56 AM
Re: rx6600: drive slot numbers and SCSI address
Sorry, I don't understand. Not enough information ...
Hope this helps!
Regards
Torsten.
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those who understand binary, and those who don't.
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тАО09-17-2008 11:59 AM
тАО09-17-2008 11:59 AM
Re: rx6600: drive slot numbers and SCSI address
Each SAS controller can manage 2 pairs of mirrored disk (hardware - integrated RAID) - this would be my first choice!
Hope this helps!
Regards
Torsten.
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those who understand binary, and those who don't.
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тАО09-17-2008 12:07 PM
тАО09-17-2008 12:07 PM
Re: rx6600: drive slot numbers and SCSI address
on other servers the device files are (more or less) fixed for internal disks.
This is very different for SAS. SCSI IDs are meaningless.
If you online replace a disk, you will get a new device file, because of a different WWID!
But you can re-assign the device by h/w path to the old device file. Hard to get.
Example?
See
http://docs.hp.com/en/J6369-90071/ch04s05.html
Hope this helps!
Regards
Torsten.
__________________________________________________
There are only 10 types of people in the world -
those who understand binary, and those who don't.
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No support by private messages. Please ask the forum!
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