hp-ux 11.31 persistent dsf on symmetrix LUNS

[Mohammad N AlHiary]

how to take advantage of the hp-ux 11.31 persistent dsf on symmetrix LUNS.

since the multipath disk is still shown multiple disks not single disk.

is there is something showed be done so that the symmetrix lun is show as single device ?

[Torsten.]

What do you see?
Multiple cxdytz or multiple diskxx files?

[Mohammad N AlHiary]

root@server01: /tmp # ioscan -kfnC disk
Class I H/W Path Driver S/W State H/W Type Description
==================================================================
disk 0 5/0/2/1/0/4/0.118.0.1.0.0.0 sdisk CLAIMED DEVICE EMC SYMMETRIX
/dev/dsk/c5t0d0 /dev/rdsk/c5t0d0
disk 1 5/0/2/1/0/4/0.118.0.1.3.7.6 sdisk CLAIMED DEVICE EMC SYMMETRIX
/dev/dsk/c6t7d6 /dev/dsk/c6t7d6s2 /dev/rdsk/c6t7d6 /dev/rdsk/c6t7d6s2
/dev/dsk/c6t7d6s1 /dev/dsk/c6t7d6s3 /dev/rdsk/c6t7d6s1 /dev/rdsk/c6t7d6s3
disk 8 5/0/2/1/0/4/0.118.0.1.3.8.3 sdisk CLAIMED DEVICE EMC SYMMETRIX
/dev/dsk/c6t8d3 /dev/rdsk/c6t8d3
disk 9 5/0/2/1/0/4/0.118.0.1.3.8.4 sdisk CLAIMED DEVICE EMC SYMMETRIX
/dev/dsk/c6t8d4 /dev/rdsk/c6t8d4
disk 10 5/0/2/1/0/4/0.118.0.1.3.8.5 sdisk CLAIMED DEVICE EMC SYMMETRIX
/dev/dsk/c6t8d5 /dev/rdsk/c6t8d5
disk 11 5/0/2/1/0/4/0.118.0.1.3.8.6 sdisk CLAIMED DEVICE EMC SYMMETRIX
/dev/dsk/c6t8d6 /dev/rdsk/c6t8d6
disk 12 5/0/2/1/0/4/0.118.0.1.3.8.7 sdisk CLAIMED DEVICE EMC SYMMETRIX
/dev/dsk/c6t8d7 /dev/rdsk/c6t8d7
disk 29 5/0/2/1/0/4/0.118.0.1.3.9.0 sdisk CLAIMED DEVICE EMC SYMMETRIX
/dev/dsk/c6t9d0 /dev/rdsk/c6t9d0
disk 2 5/0/4/1/0/4/0.166.0.1.0.0.0 sdisk CLAIMED DEVICE EMC SYMMETRIX
/dev/dsk/c8t0d0 /dev/rdsk/c8t0d0
disk 3 5/0/4/1/0/4/0.166.0.1.3.7.6 sdisk CLAIMED DEVICE EMC SYMMETRIX
/dev/dsk/c9t7d6 /dev/dsk/c9t7d6s2 /dev/rdsk/c9t7d6 /dev/rdsk/c9t7d6s2
/dev/dsk/c9t7d6s1 /dev/dsk/c9t7d6s3 /dev/rdsk/c9t7d6s1 /dev/rdsk/c9t7d6s3
disk 13 5/0/4/1/0/4/0.166.0.1.3.8.3 sdisk CLAIMED DEVICE EMC SYMMETRIX
/dev/dsk/c9t8d3 /dev/rdsk/c9t8d3
disk 14 5/0/4/1/0/4/0.166.0.1.3.8.4 sdisk CLAIMED DEVICE EMC SYMMETRIX
/dev/dsk/c9t8d4 /dev/rdsk/c9t8d4
disk 15 5/0/4/1/0/4/0.166.0.1.3.8.5 sdisk CLAIMED DEVICE EMC SYMMETRIX
/dev/dsk/c9t8d5 /dev/rdsk/c9t8d5
disk 16 5/0/4/1/0/4/0.166.0.1.3.8.6 sdisk CLAIMED DEVICE EMC SYMMETRIX
/dev/dsk/c9t8d6 /dev/rdsk/c9t8d6
disk 17 5/0/4/1/0/4/0.166.0.1.3.8.7 sdisk CLAIMED DEVICE EMC SYMMETRIX
/dev/dsk/c9t8d7 /dev/rdsk/c9t8d7
disk 28 5/0/4/1/0/4/0.166.0.1.3.9.0 sdisk CLAIMED DEVICE EMC SYMMETRIX
/dev/dsk/c9t9d0 /dev/rdsk/c9t9d0
root@server01: /tmp # ioscan -kfnNC disk
Class I H/W Path Driver S/W State H/W Type Description
===================================================================
disk 4 64000/0xfa00/0x1 esdisk CLAIMED DEVICE EMC SYMMETRIX
/dev/disk/disk4 /dev/rdisk/disk4
disk 5 64000/0xfa00/0x2 esdisk CLAIMED DEVICE EMC SYMMETRIX
/dev/disk/disk5 /dev/disk/disk5_p2 /dev/rdisk/disk5 /dev/rdisk/disk5_p2
/dev/disk/disk5_p1 /dev/disk/disk5_p3 /dev/rdisk/disk5_p1 /dev/rdisk/disk5_p3
disk 6 64000/0xfa00/0x4 esdisk CLAIMED DEVICE EMC SYMMETRIX
/dev/disk/disk6 /dev/rdisk/disk6
disk 7 64000/0xfa00/0x5 esdisk CLAIMED DEVICE EMC SYMMETRIX
/dev/disk/disk7 /dev/disk/disk7_p2 /dev/rdisk/disk7 /dev/rdisk/disk7_p2
/dev/disk/disk7_p1 /dev/disk/disk7_p3 /dev/rdisk/disk7_p1 /dev/rdisk/disk7_p3
disk 18 64000/0xfa00/0xc esdisk CLAIMED DEVICE EMC SYMMETRIX
/dev/disk/disk18 /dev/rdisk/disk18
disk 19 64000/0xfa00/0xd esdisk CLAIMED DEVICE EMC SYMMETRIX
/dev/disk/disk19 /dev/rdisk/disk19
disk 20 64000/0xfa00/0xe esdisk CLAIMED DEVICE EMC SYMMETRIX
/dev/disk/disk20 /dev/rdisk/disk20
disk 21 64000/0xfa00/0xf esdisk CLAIMED DEVICE EMC SYMMETRIX
/dev/disk/disk21 /dev/rdisk/disk21
disk 22 64000/0xfa00/0x10 esdisk CLAIMED DEVICE EMC SYMMETRIX
/dev/disk/disk22 /dev/rdisk/disk22
disk 23 64000/0xfa00/0x11 esdisk CLAIMED DEVICE EMC SYMMETRIX
/dev/disk/disk23 /dev/rdisk/disk23
disk 24 64000/0xfa00/0x12 esdisk CLAIMED DEVICE EMC SYMMETRIX
/dev/disk/disk24 /dev/rdisk/disk24
disk 25 64000/0xfa00/0x13 esdisk CLAIMED DEVICE EMC SYMMETRIX
/dev/disk/disk25 /dev/rdisk/disk25
disk 26 64000/0xfa00/0x14 esdisk CLAIMED DEVICE EMC SYMMETRIX
/dev/disk/disk26 /dev/rdisk/disk26
disk 27 64000/0xfa00/0x15 esdisk CLAIMED DEVICE EMC SYMMETRIX
/dev/disk/disk27 /dev/rdisk/disk27
disk 30 64000/0xfa00/0x16 esdisk CLAIMED DEVICE EMC SYMMETRIX
/dev/disk/disk30 /dev/rdisk/disk30
disk 31 64000/0xfa00/0x17 esdisk CLAIMED DEVICE EMC SYMMETRIX
/dev/disk/disk31 /dev/rdisk/disk31





root@server: /tmp # ioscan -m dsf
Persistent DSF Legacy DSF(s)
========================================
/dev/pt/pt2 /dev/rscsi/c4t1d0
/dev/pt/pt3 /dev/rscsi/c7t1d0
/dev/rdisk/disk4 /dev/rdsk/c5t0d0
/dev/rdisk/disk5 /dev/rdsk/c6t7d6
/dev/rdisk/disk5_p1 /dev/rdsk/c6t7d6s1
/dev/rdisk/disk5_p2 /dev/rdsk/c6t7d6s2
/dev/rdisk/disk5_p3 /dev/rdsk/c6t7d6s3
/dev/rdisk/disk6 /dev/rdsk/c8t0d0
/dev/rdisk/disk7 /dev/rdsk/c9t7d6
/dev/rdisk/disk7_p1 /dev/rdsk/c9t7d6s1
/dev/rdisk/disk7_p2 /dev/rdsk/c9t7d6s2
/dev/rdisk/disk7_p3 /dev/rdsk/c9t7d6s3
/dev/rdisk/disk18 /dev/rdsk/c6t8d3
/dev/rdisk/disk19 /dev/rdsk/c6t8d4
/dev/rdisk/disk20 /dev/rdsk/c6t8d5
/dev/rdisk/disk21 /dev/rdsk/c6t8d6
/dev/rdisk/disk22 /dev/rdsk/c6t8d7
/dev/rdisk/disk23 /dev/rdsk/c9t8d3
/dev/rdisk/disk24 /dev/rdsk/c9t8d4
/dev/rdisk/disk25 /dev/rdsk/c9t8d5
/dev/rdisk/disk26 /dev/rdsk/c9t8d6
/dev/rdisk/disk27 /dev/rdsk/c9t8d7
/dev/rdisk/disk30 /dev/rdsk/c9t9d0
/dev/rdisk/disk31 /dev/rdsk/c6t9d0

[Torsten.]

I don't know much about this arrays, but AFAIR they must have a minimum firmware level and some special settings for HP-UX.

[skt_skt]

Symmetrix is a active/active array it will have a least 2 paths in a HA configuration. If power path is used to manage the failover & load balancing you will get an emcpower* name and corresponding 2*cxtydz numbers.

11.31 have its on native multi pathing as far as i know, but still i would go with each LUN should have to paths/cxtydz to benifit the active/active or HA configuratio. I wont be surprised to see multiple paths to single LUN>

[chris huys_4 · Accepted solution]

http://forums11.itrc.hp.com/service/forums/questionanswer.do?threadId=1299300

[Mohammad N AlHiary]

it was the SPC-2.

thanx all