topic Creating LUNS on EMC array in Operating System - HP-UX

Creating LUNS on EMC array

so_2 — Fri, 26 Jan 2007 05:44:52 GMT

Hi All,

Today I am adding one fibre cards to one of our hp ux servers running hpux 11:00 and will connect to EMC array. How do i create LUNS once the card is detected by the system.

Thanks
s.o

Re: Creating LUNS on EMC array

Peter Godron — Fri, 26 Jan 2007 06:20:07 GMT

Hi,
either get the docs from
https://powerlink.emc.com

or I can suggest:
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=1082018
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=945627

Re: Creating LUNS on EMC array

Senthil Kumar .A_1 — Fri, 26 Jan 2007 06:24:37 GMT

Hi s.o,

There are some ground works to do before the HPUX is able to see the Luns.

First and foremost, How are you connecting the EMC array to the server HBA, Directly (Private loop) or through SAN switches.

Case 1) If directly, First you need to see that your HBA is assined the ALPA or not. For that you need to run the command fcmsutil on hpux server and query the particular card.

ioscan -fnC fc

Take the device file you get in the previous output and feed it to fcmsutil commant

ex: fcmsutil /dev/td0

Check the values in "nport_id" field, if you find it blank that means your HBA is not seeing the Storage FC card yet.

Case 2: If connected through SAN switches, lets say Brocade silkworm or Cisco or Mcdata switches, you need to contact the SAN admin to create the zones so that Host and Storage can see each other.

Then comes the final part, In EMC ECC console or SYMCLI interface you need to present the luns to the Host ID. Please remember you need to create a host ID in EMC first and then present it to that object.

Once all these are done, go to HPUX box and run

ioscan -fnC fc --- To show FC cards
ioscan -fnC fcp --- to see the target SAN switch domains
fcmsutil /dev/td# get remote all --- to see the devices allocated to that HBA
ioscan -fnC disk --- to make the kernel view all the new luns
insf -C disk --- to create device files for newly created luns
symmask, sympd --- comamnds to verify the EMC luns allocated.

Voila, then step into LVM and VXVM arena..

Best of luck.

Re: Creating LUNS on EMC array

Matti_Kurkela — Fri, 26 Jan 2007 06:25:27 GMT

If it's a pre-existing array, you ask the array administrator to create the LUNs for you.

You cannot create the LUNs with HP-UX tools: you'll need at least the SYMCLI package from EMC. These are downloadable from EMC Powerlink (which is EMC's equivalent to HP ITRC). Unless things have changed, you'll need a support agreement to be able to download anything from Powerlink.

http://powerlink.emc.com

If the array is enterprise-sized, configuring it is *NOT* a simple task. If it's a new array, one should plan the array's basic setup carefully: there are some things that are difficult to change while the array is in use.

Re: Creating LUNS on EMC array

f. halili — Fri, 26 Jan 2007 10:37:53 GMT

Connect ro your EMC array and use "Navisphere Manager" GUI.

Go to the RAID GROUP, you want to use and "Bind A LUN".

Thanks,
f. halili