topic Re: VA redundancy Group Help in Disk Enclosures

VA redundancy Group Help

Jez Kadzewski — Mon, 02 Aug 2010 15:04:26 GMT

I have a VA7400 with 30 73 GB disks attached to 2 san switch. I have two redundancy groups RG1 780GB & RG2 685GB, I have created one lun (lun1) at 740GB in RG1 presented to a windows server which is now configured.

I can create a new lun in RG2 (lun2) of 350GB but my hpux server will not see the lun in an ioscan, however they both see lun0 1GB with default WC permissions. I created a small 500MB lun (lun3) in RG1 & presented it to the unix server & I can see that in an ioscan.

So my problem seems to be that any lun created in RG2 is not visible to hpux. Can anyone help as I have little understanding of why there are two redundancy groups & why I have this problem?

Re: VA redundancy Group Help

Uwe Zessin — Mon, 02 Aug 2010 15:29:11 GMT

During normal operation, one controller manages one RG and the other controller manages the second RG - just makes good use of both controllers.
Sorry, no idea about the real problem.

Re: VA redundancy Group Help

Jez Kadzewski — Wed, 04 Aug 2010 11:23:42 GMT

I thought I had resolved the issue, I can present luns created in both RG1 & RG2 to a windows 2003 host but I still can't see any luns created in RG2 on any of my HPUX hosts.

I am using the following lun security & host port behavior settings.

DEFAULT 0 WC
NODEWWN 20000000c92d7bf5 1 WC
NODEWWN 20000000c92d7bf5 3 WC
NODEWWN 20000000c92d7bf6 1 WC
NODEWWN 20000000c92d7bf6 3 WC
NODEWWN 50060b000024147b 2 WC
NODEWWN 50060b0000241484 2 WC
DEFAULT 1 0
DEFAULT 2 0
DEFAULT 3 0

50060b000024147b HPUX
20000000c92d7bf6 Win2000
20000000c92d7bf5 Win2000
50060b0000241485 HPUX
50060b000024147a HPUX
50060b0000241484 HPUX

Thanks

Re: VA redundancy Group Help

Torsten. — Wed, 04 Aug 2010 12:15:46 GMT

The secure manager table looks good so far. Did you check the zoning? An "armdsp -a ..." would be good.

Re: VA redundancy Group Help

Jez Kadzewski — Wed, 04 Aug 2010 13:24:16 GMT

Thanks Torsten,

There is no zoning config on the san I have attached armdsp -a

Re: VA redundancy Group Help

Torsten. — Wed, 04 Aug 2010 13:33:07 GMT

LUN2 and LUN3 are in RG2 - you can see LUN3???

The armdsp looks good so far.

Try to get more information by running "armtopology".

Re: VA redundancy Group Help

Jez Kadzewski — Wed, 04 Aug 2010 13:48:23 GMT

I can see lun 3 on my windows host. The hpux host can see lun 0 which is the management lun.
I have tried three different hpux hosts all with the same problem. One other thing is the windows host also has Command View SDM installed & is managing the VA. Please see armtopology.

Thanks.

Re: VA redundancy Group Help

Jez Kadzewski — Wed, 04 Aug 2010 13:50:36 GMT

I forgot to mention lun 2 is not visible

Re: VA redundancy Group Help

Torsten. — Wed, 04 Aug 2010 13:56:48 GMT

Looks like only LUN2 is configured for a hp-ux host:

NODEWWN 50060b000024147b 2 WC
NODEWWN 50060b0000241484 2 WC

Re: VA redundancy Group Help

Jez Kadzewski — Wed, 04 Aug 2010 14:15:58 GMT

Yes that is correct, attached is an ioscan with lun 2 RG2 presented to WWN 50060b000024147b & 50060b0000241485 both hpux HBA's, and after that an ioscan with a new lun (lun 4) I have just created from RG1 to the same HBA's.

Thanks

Re: VA redundancy Group Help

Torsten. — Wed, 04 Aug 2010 16:53:07 GMT

You are probably aware of it

DEFAULT 2 0

means nobody has any permission to access LUN2, but

NODEWWN 50060b0000241484 2 WC

this WWN is allowed for CREATE and WRITE to LUN2.

You need to adjust this for all server/LUN combinations.