topic Re: secure path in HPE EVA Storage

secure path

Cristobal Ruiz_1 — Thu, 09 Feb 2006 10:16:27 GMT

Hi,

I have a problem with Secure Path 3.0 F SP1 running on a rx4640 HP-UX v11.23 conected to a EVA 4000.

The problem is that I am presenting from the EVA to the rx4640 (Itanium) one virtual disk, and I can see 4 disks when I type the ioscan -fnC disk command on HP-UX.

Secure Path is running on Active-Active mode and I have 2 switches connected to the EVA.

My question is: Is it working properly if I can see 4 disk from the HP-UX or should I see only One disk because the EVA has present to me only one disk?

PD: from the SAM (System Administration Manager) I can see 2 disks with 2 path each.

All suggestions will be taken into account.
Thank you very much in advance.

Jorge

Re: secure path

Steven Clementi — Thu, 09 Feb 2006 10:30:13 GMT

Jorge:

Your OS will see 4 disks because there are 4 paths to the single presented Virtual Disk. Secure Path is supposed to take those 4 raw devices and create a new SecurePath Disk file for you to use and configure.

If you do a scan with spmgr, you should see a single SP disk, with 4 paths matching the 4 disks you see with ioscan. (or so I am told)

Looks like it is working correctly so far. Tell use what SecurePath see's and is presenting.

Steven

Re: secure path

Alzhy — Thu, 09 Feb 2006 10:30:37 GMT

Yep.. that's how SecurePath for Active/Active arrays works. It is actually called AutoPath.

You will always see 4 disks devices if you've 2 HBA's to your EVA4/6/8K.

autopath discover
autopath display

If you will be using LVM, then ismply add the first/main path and the other paths will be automagically added as PVLINKs... stil cannot understand why this is so -- at least this is what I've experienced with AutoPath.

NEVER use VxVM with AutoPath though! If you must - drop AutoPath/SecurePath and just use DMP.

Re: secure path

Cristobal Ruiz_1 — Sun, 12 Feb 2006 15:30:40 GMT

Thank you very much for your answers.

I will create one physical volume with one disk and I will extend the new vg that I create to the rest of the disk to make them work properly.

Do you have any other recomendation to use with the disk o with auto path?

Best regards.