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how to indentify the diffrent special device name that may belong to the same disk

 
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study unix
Regular Advisor

how to indentify the diffrent special device name that may belong to the same disk

hi ,how to indentify the diffrent device name that may belong to the same disk?
for example,if c2t3d4 and c5t3d4 points to the same disk, how to indentify it,
please kindly introduce it, many thanks!
16 REPLIES 16
Torsten.
Acclaimed Contributor

Re: how to indentify the diffrent special device name that may belong to the same disk

SAM does a good job in doing this because of some special internal scripts.

Other tools like evainfo or xpinfo do the same, but are product specific.

Hope this helps!
Regards
Torsten.

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singh sanjeev
Trusted Contributor

Re: how to indentify the diffrent special device name that may belong to the same disk

c2t3d4 and c5t3d4

for above target and device [t3d4] is same then i can say both path for same disk. t3d4
Sanjeev Singh
Torsten.
Acclaimed Contributor

Re: how to indentify the diffrent special device name that may belong to the same disk

This is just an assumption.

What if I have let's say 2 different arrays in my SAN and present a LUN7 from each to the same server?

Don't make assumptions here in this context.

Hope this helps!
Regards
Torsten.

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singh sanjeev
Trusted Contributor

Re: how to indentify the diffrent special device name that may belong to the same disk



if disk are not on seperate EMC boxs then it may point to different disk.

for complete surety use :

Storage command to check:

:syminq for EMC storage type

and command mention by torsten

Sanjeev Singh
study unix
Regular Advisor

Re: how to indentify the diffrent special device name that may belong to the same disk

thanks for all reply!
if they is from the same array, c2t3d4 and c5t3d4 are one disk?
Torsten.
Acclaimed Contributor
Solution

Re: how to indentify the diffrent special device name that may belong to the same disk

You cannot say.

The hardware path will show a better picture (ioscan -fn).

But better use SAM or the other specific tools.

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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study unix
Regular Advisor

Re: how to indentify the diffrent special device name that may belong to the same disk

hi Torsten,
I don't understand it fully,
if it uses SAM or ioscan -fn, then it can indentify them,if you can give one example,thanks!
Torsten.
Acclaimed Contributor

Re: how to indentify the diffrent special device name that may belong to the same disk

Could you please post your

# ioscan -fn

Hope this helps!
Regards
Torsten.

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those who understand binary, and those who don't.

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study unix
Regular Advisor

Re: how to indentify the diffrent special device name that may belong to the same disk

I will attach it tomorrow, many thanks!