Hello Experts..is there some way we can find the WWN of Hitachi LUN?.Like we can find for EMC devices...we are testing Open Replicator from HDS to EMC storages and need to fill in the WWN of the devices we are replicating..any command or method should help.
Balaji
Which HDS storage are you using?
Hitachi USPV
Balaji
Do you want the WWN's of the host connected or the Storage?
Nopes...I am not looking for any WWN's and please dont confuse this term with the one used commonly for HBA cards on servers.
Basically I am from EMC background and in EMC every LUN (or meta) in the storage box is given a unique WWN which is a 64 bit identity of the device.if you work on EMC you can understand that this comes in the output of SYMDEV .
I am looking for something similar for a HDS device as we are planning to use EMC Open Replicator tool for data copy frpm HDS to EMC .For this I need to WWN i.e the unique ID to create the pairing file.
Any insight will be appreciated
Balaji
If you want to find the WWN's of the Host, Then follow the steps
>> Go to LUN Manager and following window will show the WWN information
Thanks for your reply but I am not very strong on the HDS front.
I have access to the storage navigator as well as device manager of the array.I tried looking into the device attributes from the GUI but nothing noted.
Are there some commands from RAID MANAGER that can be run to retrieve the same.
Balaji
If you want to get the available WWN's or the CL ports available in USPV, You have to browse the Port window in the SN. That will give you the complete details of the Front end ports.
You can change the port attributes by enabling the modify mode.
Balaji,
I think what you're looking for is the SCSI WWID (World Wide Identifier) which is a persistent, system-independent, and unique ID that is required for all SCSI devices by the SCSI standard. The terminology is confusing (the terms LUN WWID and LUN WWN seem to be used interchangeably), but it is different from the storage WWN (HBA, array controllers, etc.).
You can obtain this WWID on the host. The exact command you can use depends on the server/OS you're using. For Linux, it's best to use scsi_id utility that comes with the udev subsystem and should be present in any more or less recent Linux distro. For example, on RHEL 6.x or Fedora you can do:
/sbin/scsi_id --page=0x83 --whitelisted /dev/sdb
This will give you something like this: 360060e80105b5cd0056eb7bd00000001
You may want to discard the first digit (it is scsi_id specific) which would leave 60060e80105b5cd0056eb7bd00000001. That is the LUN SCSI WWID that is formed using many parameters such as the IEEE OUI, array model and serial number, LUN ID, etc.
Let me know if this helps. If you're using something other than Linux, let me know and I can help further.
-Michael
Thanks Michael..this is exactly what I am looking for ..
The OS here is Windows 2008...Please let me know the exact way to locate for this OS
Balaji
If you are using MPIO in windows then you can use mpclaim -v to get the details of SCSI WWID. Also you can redirect the output to a notepad.
mpclaim.exe -v c:\wwid.txt
Balaji,
There are several ways to get this on Windows.
On Windows 2008 and 2008R2: use Storage Explorer MMC snap-in.
Any Windows Server: use HBA manufacturer's management software, such as OneCommand Manager (HBAnywhere) for Emulex or SANsurfer for QLogic.
There are also various smaller utilities, such as:
http://www.symantec.com/business/support/index?page=content&id=TECH72086
Try scsicmd -dALL -s83 with this utility. Unfortunately I don't currently have a SAN-connected Windows box handy so can't test this for you.
Cheers!
-Michael
There are two versions of scsicmd utility; the second one
seems to work better.
Thanks for your help Michael.
Balaji
There are two versions of scsicmd utility; the second one
http://kbdownload.symantec.com/resources/sites/BUSINESS/content/live/TECHNICAL_SOLUTION/72000/TECH72086/en_US/scsicmd.ex…
seems to work better.