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Power machine 720 SAS disk


 
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Operating Systems AIX Power machine 720 SAS disk
# 1  
Old 01-06-2020
Power machine 720 SAS disk

Hello,

I would like to check how many SAS disks and its size per disk for the whole power system. As per my understanding, if we assign the SAS controller to LPAR, then we can see the disk in lpar smitty command.

How can we check from the Power machine(physical ones) as well? I think the power system should know how many disks it has and its size.

I have check in ASMI page, and in the console SMS, I can see some disks, but not see the size (screenshot attached).

Power machine 720 SAS disk-sas_diskpng
# 2  
Old 01-06-2020
It depends quite what you are looking for. Do any of these help (sorry but I no longer have access to AIX so I'm a bit rusty!)
Code:
lspv
lspv -v
lspv -l
lsvpcfg                    # (possibly with a -l flag?)
lsdev -Cc disk             # Bit of a long shot perhaps
lscfg -v|grep -i disk      # Again, a bit of a guess

What are the metrics you are looking for? Is it the LPAR view of the assigned disk to the size of the disk that is owned by the hardware as a whole? The LPAR will not see that.



I hope that these suggestions give you something.
Robin
This User Gave Thanks to rbatte1 For This Post:
# 3  
Old 01-06-2020
from the hardware itself, you cannot see the disks - you can only see the controllers, not what is attached to them.

As part of the SMS menu you can see the disks and sizes if you query the controllers - or when you install AIX as you have to select a suitable disks for the installation - with location code.

If you have AIX already installed, run these commands.

to find your SAS disks, run
Code:
lsdev -Cc disk | grep -i sas

to figure out the disk size of said disks use
Code:
getconf DISK_SIZE /dev/<hdisk>

# 4  
Old 01-07-2020
Quote:
Originally Posted by rbatte1
It depends quite what you are looking for. Do any of these help (sorry but I no longer have access to AIX so I'm a bit rusty!)
Code:
lspv
lspv -v
lspv -l
lsvpcfg                    # (possibly with a -l flag?)
lsdev -Cc disk             # Bit of a long shot perhaps
lscfg -v|grep -i disk      # Again, a bit of a guess

What are the metrics you are looking for? Is it the LPAR view of the assigned disk to the size of the disk that is owned by the hardware as a whole? The LPAR will not see that.




I hope that these suggestions give you something.
Robin
Thank Robin, I would like to check at the physical hardware console, not from LPAR, have not LPAR right now.

--- Post updated at 06:13 AM ---

Quote:
Originally Posted by zxmaus
from the hardware itself, you cannot see the disks - you can only see the controllers, not what is attached to them.

As part of the SMS menu you can see the disks and sizes if you query the controllers - or when you install AIX as you have to select a suitable disks for the installation - with location code.

If you have AIX already installed, run these commands.

to find your SAS disks, run
Code:
lsdev -Cc disk | grep -i sas

to figure out the disk size of said disks use
Code:
getconf DISK_SIZE /dev/<hdisk>

Hi Zxmaus,

I understand now that from physical hardware Power Machine we cannot check the disk and size.

Still have 1 thing to ask, for SAS disk, I see it is part of raid controller. The disk is called pdisk. After configuring raid, it becomes hdisk which AIX can see. The question is, if in the first time, we assign the controller and its disks to LPAR to install AIX. How can we configure the raid before AIX OS can see these disks?
# 5  
Old 01-09-2020
Hi,
please check out this link and see if that works - our boxes come always preconfigured, so I cannot guarantee for it Smilie
This User Gave Thanks to zxmaus For This Post:
# 6  
Old 01-15-2020
Hi Zmaus,

The link is very useful SmilieSmilie

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