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How to know which MSA1000 coressponds which Windows disk?

Gera2
Occasional Contributor

How to know which MSA1000 coressponds which Windows disk?

Have an failing MSA1000 with several LUNs of 1 Tb. Need an advice on this: how to know which MSA LUN corresponds to which Windows disk?

Thanks a lot,
Gera
BDC
3 REPLIES
The Spartan
Trusted Contributor

Re: How to know which MSA1000 coressponds which Windows disk?

Reach the ACU of the host and when you are choose the controller - MAS1000 the HDDs pertinent to the host should blink red
If you are keen to win, you should be willing to lose.
SAKET_5
Honored Contributor

Re: How to know which MSA1000 coressponds which Windows disk?

TheSpartan,

The question is not to identify the physical disk drives coming out of a MSA logical drive. If I understand the question correctly, Gera2 needs to find a method to map the LUN (logical unit number) at the MSA level to a Windows OS level logical disk.

Gera, I suggest the following:
- right click on the disk device under Windows and see properties to determine the LUN value - e.g. bus-0 targ0 lun-2 and then correlate that with MSA Logical drives LUN values.
- Unsure if the logical disk drive at the Windows level would spit out the WWID of the disk device (or an identifier) that you can then co-relate with the MSA level disk WWID or identifier. But have a go anyway - not 100% sure on this one - I know this method works for EVAs, etc.
Steven Clementi
Honored Contributor

Re: How to know which MSA1000 coressponds which Windows disk?

Opening ACU would blink ALL the lights when the MSA was selected indicating that you have "selected" to manager that MSA. It will not blink the lights for ONLY those drives presented to that server.


Most easily, you can generally match up the order of presentation with the order displayed in the Disk Manager.

Assuming you have 3 Logical Units, LUN1, LUN2 and LUN3... in Disk Manager (assuming you only have a single logical unit for your OS) those 3 logical units should show up in the same order. LUN1 = Disk1, LUN2 = Disk2, LUN3 = Disk3.

Assuming you have 3 Logical Units presented to the server LUN1, LUN3, LUN5... the same theory applies except that... LUN1=Disk1, LUN3=Disk2, LUN5=Disk3.

The hardware properties page should also display the Logucal Unit Number the device is presented on.


Steven
Steven Clementi
HP Master ASE, Storage and Clustering
MCSE (NT 4.0, W2K, W2K3)
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