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

[study unix]

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!

[Torsten.]

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.

[singh sanjeev]

c2t3d4 and c5t3d4

for above target and device [t3d4] is same then i can say both path for same disk. t3d4

[Torsten.]

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.

[singh sanjeev]

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

[study unix]

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

[Torsten. · Accepted solution]

You cannot say.

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

But better use SAM or the other specific tools.

[study unix]

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.]

Could you please post your

# ioscan -fn

[study unix]

I will attach it tomorrow, many thanks!