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Juan Manuel Rey

Unix Geek. Sysadmin by heart turned cloud architect. Working for Microsoft.

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In my previous post about EMC storage I showed a procedure to identify the ID of LUN presented to an 11iv3 host without Powerpath, which is not recommended to be installed on 11.31. I stated that I only did test the procedure with Symmetrix DMX arrays.

Jean Mesquida, a reader of this blog and a friend, tried the same procedure with CLARiiON cabinets and discovered that it didn’t work because the serial number attribute was the same for every disk. After that he performed some tests and provided a similar solution using to the EMC tool inquiry.

The inquiry utility can be downloaded in the following URL:

ftp://ftp.emc.com/pub/symm3000/inquiry/

Following are his results, all credit of this post goes to him I’m just publishing his work here. I also want to thank my friend Jesus at EMC who confirmed Jean’s procedure. Many thanks to both of you, without people like you this blog wouldn’t be possible :-)

And now the procedure:

Launch an inq against the CLARiiON array.

[hpux-server]root:/ #/usr/local/bin/inq -clariion
Inquiry utility, Version V7.3-891 (Rev 2.0)      (SIL Version V6.5.2.0 (Edit Level 891)
Copyright (C) by EMC Corporation, all rights reserved.
For help type inq -h.

................................................................

-------------------------------------------------------------------------------------------------
DEVICE              :VEND    :PROD            :REV   :SER NUM    :CAP(kb)      :VLU :CLUN:State
-------------------------------------------------------------------------------------------------
...
/dev/rdsk/c7t0d1    :DGC     :CX4-240WDR5     :HP03  :Ch2 CONT   :    83886080:   1:  2a:ASSIGNED
/dev/rdsk/c7t0d2    :DGC     :CX4-240WDR5     :HP03  :Ch2 CONT   :    83886080:   2:  2b:ASSIGNED
/dev/rdsk/c7t0d3    :DGC     :CX4-240WDR5     :HP03  :Ch2 CONT   :     5242880:   3:  2c:ASSIGNED
/dev/rdsk/c7t0d4    :DGC     :CX4-240WDR5     :HP03  :Ch2 CONT   :     5242880:   4:  2d:ASSIGNED
/dev/rdsk/c7t0d5    :DGC     :CX4-240WDR5     :HP03  :Ch2 CONT   :     5242880:   5:  2e:ASSIGNED
/dev/rdsk/c7t0d6    :DGC     :CX4-240WDR5     :HP03  :Ch2 CONT   :     5242880:   6:  2f:ASSIGNED
/dev/rdsk/c7t0d7    :DGC     :CX4-240WDR5     :HP03  :Ch2 CONT   :   419430400:   7:  30:ASSIGNED
/dev/rdsk/c8t0d1    :DGC     :CX4-240WDR5     :HP03  :Ch2 CONT   :    83886080:   1:  2a:ASSIGNED
/dev/rdsk/c8t0d2    :DGC     :CX4-240WDR5     :HP03  :Ch2 CONT   :    83886080:   2:  2b:ASSIGNED
/dev/rdsk/c8t0d3    :DGC     :CX4-240WDR5     :HP03  :Ch2 CONT   :     5242880:   3:  2c:ASSIGNED
/dev/rdsk/c8t0d4    :DGC     :CX4-240WDR5     :HP03  :Ch2 CONT   :     5242880:   4:  2d:ASSIGNED
/dev/rdsk/c8t0d5    :DGC     :CX4-240WDR5     :HP03  :Ch2 CONT   :     5242880:   5:  2e:ASSIGNED
/dev/rdsk/c8t0d6    :DGC     :CX4-240WDR5     :HP03  :Ch2 CONT   :     5242880:   6:  2f:ASSIGNED
/dev/rdsk/c8t0d7    :DGC     :CX4-240WDR5     :HP03  :Ch2 CONT   :   419430400:   7:  30:ASSIGNED
/dev/rdsk/c9t0d1    :DGC     :CX4-240WDR5     :HP03  :Ch2 CONT   :    83886080:   1:  2a:ASSIGNED
/dev/rdsk/c9t0d2    :DGC     :CX4-240WDR5     :HP03  :Ch2 CONT   :    83886080:   2:  2b:ASSIGNED
/dev/rdsk/c9t0d3    :DGC     :CX4-240WDR5     :HP03  :Ch2 CONT   :     5242880:   3:  2c:ASSIGNED
/dev/rdsk/c9t0d4    :DGC     :CX4-240WDR5     :HP03  :Ch2 CONT   :     5242880:   4:  2d:ASSIGNED
/dev/rdsk/c9t0d5    :DGC     :CX4-240WDR5     :HP03  :Ch2 CONT   :     5242880:   5:  2e:ASSIGNED
/dev/rdsk/c9t0d6    :DGC     :CX4-240WDR5     :HP03  :Ch2 CONT   :     5242880:   6:  2f:ASSIGNED
/dev/rdsk/c9t0d7    :DGC     :CX4-240WDR5     :HP03  :Ch2 CONT   :   419430400:   7:  30:ASSIGNED
/dev/rdsk/c10t0d1   :DGC     :CX4-240WDR5     :HP03  :Ch2 CONT   :    83886080:   1:  2a:ASSIGNED
/dev/rdsk/c10t0d2   :DGC     :CX4-240WDR5     :HP03  :Ch2 CONT   :    83886080:   2:  2b:ASSIGNED
/dev/rdsk/c10t0d3   :DGC     :CX4-240WDR5     :HP03  :Ch2 CONT   :     5242880:   3:  2c:ASSIGNED
/dev/rdsk/c10t0d4   :DGC     :CX4-240WDR5     :HP03  :Ch2 CONT   :     5242880:   4:  2d:ASSIGNED
/dev/rdsk/c10t0d5   :DGC     :CX4-240WDR5     :HP03  :Ch2 CONT   :     5242880:   5:  2e:ASSIGNED
/dev/rdsk/c10t0d6   :DGC     :CX4-240WDR5     :HP03  :Ch2 CONT   :     5242880:   6:  2f:ASSIGNED
/dev/rdsk/c10t0d7   :DGC     :CX4-240WDR5     :HP03  :Ch2 CONT   :   419430400:   7:  30:ASSIGNED
...

We are going to use the last disk (c10t0d7). Take a look at the CLUN column, this column gives the LUN ID (0x30=48 for instance) on the Clariion array. So is Jean’s understanding, and I fully agree with him, that c10t0d7 disk match the 48 LUN on this CLARiiON array.

Finally, and to be more accurate, I modified the title of the other post to reflect that is only for Symmetrix arrays.

Juanma.