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155 Posts
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1701
December 29th, 2010 21:00
LUN utilization report
Dears,
I would like to find out the utilization of LUN i.e total LUN capacity and how much has been utilized by the SAN host. Basically, I would like to figure out the utilization storage disks out of total allocated storage for each and every SAN host. So that I can eliminate the unjustifiable storage request.
We have ECC installed and would like to generate a report by host wise with LUN utilization and capacity.
this is the report format i like the report to be
Host | LUN ID | Size | Utilized | Free
really appreciate if you guys help me on this request
cheers
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AnuShivnath
41 Posts
1
December 30th, 2010 05:00
This would be a hard report to arrive at accurately, as we have tried to, during several different occasions in the past. The reason are many, one of the primary one being that the filesystem or raw database(in the case of ESX it could be the VMFS or a raw device) is spread across many Array Luns. In that case we do not have the information to ascertain how much of the total filesystem/total database is spread across the luns to accurately determine the lun utilization. However if the filesystem or database is residing on one and only lun, then it may be possible to arrive at the utilization for that particular LUN. It begins to get further complicated if the filesystem is spread across Array Luns and Internal JBOD of the host or if we cannot determine the exact residence of the filesystem or database. All of these comments is in the case of a traditional LUN, in other words it is not virtually provisione,d.
In the case of virtual provisioned luns, we can accurately tell how much of the thin device is used, however we cannot tie the thin lun to the utilization on a particular data device. All of the data device capacity goes into a pool and we can determine the thin pool used capacity.
The closest you can get is utilization at an array level for a given host. We have a column "Accessible Used" for a given host that is accessing the array which will pull together the various utilization, from a traditional and virtually provisioned perspective. In QB a built in query named "5.2 Host -Array" is a good starting point.
Hope this helps.
Anu Shivnath.
d.engamba
16 Posts
1
December 30th, 2010 07:00
Hi,
to have report on Host | Lun ID | Size, we use reporting tool of NST on Navisphere Manager. It provide XML files you can use to make a report. I don't know if ECC can provide this kind of report. I think it could be usefull to have it on ECC.
Regards,
SarahXu1
59 Posts
1
January 4th, 2011 08:00
If you want Host | Lun ID | Size, you can do this through StorageScope query builder by selecting objects Hosts, Host Devices and Luns, Then select columns: Host Name, Lun Name and Lun Size (Assignable Device Capacity). Or you can select Device Allocation and Luns, then select columns: Host/HBA Name, Lun Name, Lun size and filter on Host Accessible = 'Yes'. However we won't be able to report on utilization for each lun.