A5158A HBA & N4000

[Steve Poaletti]

I have an N4000 with 2 A5158A FC HBA's installed.

Using HP-UX 11i.

I want to connect both HBAs to a McData Fabric switch (ED-5000).

What is the maximum number of SCSI devices that I can "see" (reported by ioscan) over a given HBA port? That is, how many unique devices can be made, and possibly be used simultaneously? Does HP-UX impose a limit?
Does the A5158A device driver? I have heard rumors...

Also, what patches do I need, if any to support connectivity to the McData? How about for the A5158A itself?

I appreciate any assistance.

Thank you.

-Steve

[Michael Tully]

The latest patches for F/C connection are:
PHNE_15537
PHKL_21834 (March 2001 patch bundle)
this has been superceded by PHKL_23939 which is downloadable. Our system works quite fine with PHKL_21834.
There has been posts before on the number of LUNS. We haven't had any trouble at all with going through an EMC switch using fabric to our SAN. How many LUNS have you got in your SAN?

[Steve Poaletti]

We intend to have at least 18 for tape library devices (16 tape drives and 2 robots), plus several disk LUNs TBD.

Thanks for your response.

[Kieran Lismore]

The maximum open lun's accessed at the same time on an HPUX system is 1024.
(Here, we don't care about the alternate path in calculation).
The current number of LUNs tested per HBA on the systems is 512 for a non-HA environment and 320 for an HA environment.

You can find the requirements for Fabric HBA on:
http://techsolutions.hp.com/fc/fabric.htm

[Mark van Hassel]

Hi,

At one time we had thousands of LUNs visible on each system in our SAN and we did not have any problems, I have heard about the limit of 1024 per HBA though.
Here's a URL with info regarding the A5158 card:
http://techsolutions.hp.com/fc/fchome.htm

There are requirements regarding the driver revision, pathces and the PDC revision.