Max LUN per HBA

 
Srinikalyan
Regular Advisor

Max LUN per HBA

Hi,
What is the maximum LUN limit per FC HBA from the XP12000 Array and EVA8000 Array?
Info:
HP-UX 11iv2
4Gbps dual port fibre channel adapter

Thanks,
Srini

 

 

P.S. This threadhas been moevd from General to Storage Area Networks (SAN) (Enterprise). - Hp forum Moderator

6 REPLIES 6
IBaltay
Honored Contributor

Re: Max LUN per HBA

Hi,
it is the queue depth which specifies the outstanding IOPs per LUN

XP
XP12000 max queue depth
XP12000 optimum queue depth is 16 for most workloads

HP-UX/EVA8000
device queue depth is set to 8 by default per LUN

HP-UX v 11.00 -> scsictl command
HP-UX v 11i -> kernel parameter scsi_max_qdepth
queuedepth should be increased e.g from 8 to 64 on EVA 8000 if only a few LUNs are being accessed
the pain is one part of the reality
Steven Clementi
Honored Contributor

Re: Max LUN per HBA

EVA8000:

Max 1023 luns all together
Max 255 luns per HBA target (on HP-UX, different for other OS's)

" http://bizsupport2.austin.hp.com/bc/docs/support/SupportManual/c00403562/c00403562.pdf "

Steven
Steven Clementi
HP Master ASE, Storage, Servers, and Clustering
MCSE (NT 4.0, W2K, W2K3)
VCP (ESX2, Vi3, vSphere4, vSphere5, vSphere 6.x)
RHCE
NPP3 (Nutanix Platform Professional)
IBaltay
Honored Contributor

Re: Max LUN per HBA

errata ->i have missed the number for the XP12000:
XP12000 max queue depth - 1024
the pain is one part of the reality
Peter Mattei
Honored Contributor

Re: Max LUN per HBA

Best is looking that up in the HP SAN Design Guide on
http://www.hp.com/go/sandesign

For the EVA you will find the numbers in chapter 11.

As an example in table 127 you will see that for EVA and HP-UX one HBA may see up to 32 EVAs and an HBA may have up to 255 LUNs.

Note that Continuous Access EVA will bring down these limits. Just read on in the SAN Guide.

Cheers
XP-Pete
I love storage
Sivakumar MJ._1
Respected Contributor

Re: Max LUN per HBA

Srinikalyan
Regular Advisor

Re: Max LUN per HBA

Thanks everyone.