How to find out the emc Clariion LUNS not in use ?

Hi Experts,

Has any body worked on this ? I need some help to figure out - How to find out the EMC Clariion LUNS on RHEL 5.7 & Solaris 10 so that we can get rid of those.

Thanks a lot Experts :-)
rajsolarisAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

arnoldCommented:
You should check the navisphere to see which LUNs are allocated and to which hosts.
Then you can check the hosts.
On redhat you have to look at /proc/scsi/<hba>
There are different tools
fdisk -l
format on Solaris will list all the disks it sees local and San based.
Each system will have the LUN info which you then have to confirm it is not n se, or stop using it, and then unallocated from the host.
https://community.emc.com/thread/114410 references analyzing LUN performance. Using a similar tact if the statistics do not change, it will suggest that te LUN might not be actively used which you MUST confirm.
0
rajsolarisAuthor Commented:
Thanks for getting back arnold.
I can not access emc218359 in the powelink - looks like need to be a partner OR customer
I do not have an account having that previlege.

We have powermt installed on both solaris & Linux RHEL 5.7 so I ran multiple commands like

# powermt display dev=all

Okay, I just got a tip from my friend for Linux -

# pvs 2>/dev/null
# powermt display dev=emcpowerat
and check the status in the pvs command. But I am not sure on solaris.
we have svm installed on solaris

Thanks again.
0
arnoldCommented:
Within navisphere on the SAN, can you see which LUNS are allocated to each host?
do you have powerpath on either/both to manage the multipathing or you use native linux multipathing

http://www.expertslogin.com/linux-administration/show-luns-allocated-on-linux/
PVS is if you use LVM filesystems on the LUNS.
Depending on what the servers do, your allocated LUNs could be used in raw form.
There are many variations.

Solaris, format should list all the disks that are seen note the make of the disk.
powermt works the same way.
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Unix OS

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.