[bonou2]

Hi guys,

I have a ds4800 with 2 port on controller A and B attached to p5 55A with 2 x 2port HBA's. What would be the best zoning configuration for this kind of setup? My current zoning setup is... I have fcs0, fcs1, fcs2 and fcs3 on the host and each was zone to controller A and B of the ds4800.. so I have 4 zones on each of my 2 SAN switches. At this kind of zoning config I have dar0 and dar1.... and dac0, dac1, dac2, dac3, dac4, dac5, dac6, dac7.... and Im not sure if this should be normal.?
Let me know your thoughts about it because Im getting some weird errors on the dac's.

[ross.mather]

Each LUN on a DS4800 can only be presented via 2 HBAs on the DS4800. This is an important constraint to remember with the combination AIX / DS4800.

This is probably why you get errors.

What I would suggest is connected both fibres on Controller A to SAN Fabric A and B to B. For each DS4800 connection create a separate zone - so you have two per fabric.

Each AIX LPAR should then connect to one Fibre in Fabric A and one Fibre in Fabric B.

If everything is correct you should have (from memory) one dar device and two dac devices.

[bonou2]

Thanks for that...

can you suggest the best way and right configuration zoning of a ds4800 attached to 2 san switches to p5 55a server, below is the configurations.

p5 55a hba- 2 x 2port hba
ds4800 ctrlA - 2 port
ds4800 ctrlB - 2 port
SAN switch - SAN32B

[ross.mather]

Not without understanding how your LPARS and so on are setup. The info above should be enough for you to work out what you need.

[bonou2]

Hi Ross,

I just used 1 port on ctrl A and ctrl B and also 1 port on each of my HBA, then zoned it to switch. With that kind of zoning would be correct?

[ross.mather]

That would be about right. You should have 2 zones defined. One with an HBA from the Server and the HBA from Controller A. And the second zone with Controller B and the other Server HBA

[bonou2]

Thanks Ross.... because I thought there might be some special zoning to do on ds4800's... because i got an error on the error log with regards to dac on it which is on my other post... can you give some advices to that...
thanks again for your responses, i appreciate it very much.

[ross.mather]

Once you zone everything - delete all the dacs, dars and hdisks on the LPARS and rerun the config manager.

If that doesn't fix the problem then post the errors.

[bonou2]

Hi Ross,

Below is the error Im getting on the error logs. I dont see any errors on my storage or any alerts, not sure if that is bug?


2E493F13 0423171208 P H dac1 ARRAY OPERATION ERROR
2E493F13 0423171208 P H dac1 ARRAY OPERATION ERROR
2E493F13 0423171208 P H dac1 ARRAY OPERATION ERROR
2E493F13 0423171208 P H dac0 ARRAY OPERATION ERROR
2E493F13 0423171208 P H dac0 ARRAY OPERATION ERROR
2E493F13 0423171208 P H dac0 ARRAY OPERATION ERROR

LABEL: FCP_ARRAY_ERR2
IDENTIFIER: 2E493F13

Date/Time: Wed Apr 23 15:20:46 EET 2008
Sequence Number: 2630
Machine Id: 000B8266D600
Node Id: vhopopa01
Class: H
Type: PERM
Resource Name: dac0
Resource Class: array
Resource Type: ibm-dac-V4
Location: U787B.001.DNWAAAB-P1-C4-T1-W201700A0B8269342
VPD:
Manufacturer................IBM
Machine Type and Model......1815 FAStT
Part Number.................16847-10
ROS Level and ID............0914

Description
ARRAY OPERATION ERROR

Probable Causes
ARRAY DASD DEVICE

Failure Causes
DISK DRIVE
DISK DRIVE ELECTRONICS

Recommended Actions
PERFORM PROBLEM DETERMINATION PROCEDURES

Detail Data
SENSE DATA
0600 1A00 2E00 4C04 0000 0000 0000 0000 0000 0000 0000 0000 0502 0000 7000 0500
0000 009E 0000 0000 2400 00C0 0002 0000 0100 0000 0000 0000 0000 0000 0000 0000
0078 0001 A21A 002E 004C 0400 0000 0000 0000 0000 0000 0000 5350 3633 3630 3033
3834 2020 2020 2020 0710 2300 00FF FF00 1100 0000 0000 0000 0000 0000 0000 0000
0000 0000 0000 00FF 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
0000 0000 0000 0000 0000 0002 479F 3034 3232 3038 2F32 3235 3031 3800 0000 0000
0000 0000 5373 8000 F205 3701 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
0000 0000
---------------------------------------------------------------------------

[duke900ssd]

Oh, just saw this post after replying to the other one.
Not sure if my reply on the other is valid now.
Please do not cross post.