Storage Boards Cleanup
To make it easier to find information about HPE Storage products and solutions, we are doing spring cleaning. This includes consolidation of some older boards, and a simpler structure that more accurately reflects how people use HPE Storage.
Disk Arrays
cancel
Showing results for 
Search instead for 
Did you mean: 

XP24000 disk utilization problem

Fredrik Uddin-Backman2
Frequent Advisor

XP24000 disk utilization problem

Hi

I have a RX8640 connected to dual XP24000 via Cisco MDS9506. HBA:s is 2x2GBit/s. Runs HPUX 11.23 and Autopath. System runs Progress database on mirrored luns (mirrored between the two XP's). We get disk utilization alerts within HP Operations and sar -d confirms we have high utilization but queues and waits seems alright i guess.

sar -d 5 5:

Average c2t6d0 7.59 0.50 24 604 0.00 8.85
Average c0t6d0 5.60 0.50 17 400 0.00 9.67
Average c22t0d3 73.90 0.50 403 9253 0.00 3.81
Average c24t0d3 61.71 0.50 229 6089 0.00 5.86
Average c22t0d2 82.57 0.50 672 17962 0.00 2.28
Average c23t0d2 84.77 0.50 672 17843 0.00 2.39
Average c24t0d2 82.57 0.50 372 11261 0.00 4.19
Average c25t0d2 81.41 0.50 372 11070 0.00 4.14
Average c22t0d4 4.24 0.50 49 622 0.00 1.07
Average c23t0d4 4.20 0.50 49 631 0.00 1.07
Average c24t0d4 1.76 0.50 28 461 0.00 1.03
Average c25t0d4 1.52 0.50 28 471 0.00 0.96

iostat:
device bps sps msps

c2t6d0 281 26.9 1.0
c0t6d0 362 16.8 1.0
c22t0d3 3349 305.8 1.0
c23t0d3 0 0.0 1.0
c24t0d3 2165 168.5 1.0
c25t0d3 0 0.0 1.0
c22t0d2 5895 411.2 1.0
c23t0d2 5801 411.2 1.0
c24t0d2 4588 308.0 1.0
c25t0d2 4724 308.0 1.0
c22t0d4 265 40.7 1.0
c23t0d4 252 40.7 1.0
c24t0d4 215 24.6 1.0
c25t0d4 201 24.6 1.0
c22t1d0 0 0.0 1.0
c23t1d0 0 0.0 1.0
c24t1d0 0 0.0 1.0
c25t1d0 0 0.0 1.0
c22t1d1 0 0.0 1.0
c23t1d1 0 0.0 1.0
c24t1d1 0 0.0 1.0
c25t1d1 0 0.0 1.0

I have tried changing autopath load balancing policy between RR (round robin) and OFF.
3 REPLIES
Torsten.
Acclaimed Contributor

Re: XP24000 disk utilization problem

Since the XP is completely 4Gb/s why not upgrading your HBAs to 4 or even 8 Gb/S?

Hope this helps!
Regards
Torsten.

__________________________________________________
There are only 10 types of people in the world -
those who understand binary, and those who don't.

__________________________________________________
No support by private messages. Please ask the forum!

If you feel this was helpful please click the KUDOS! thumb below!   
Fredrik Uddin-Backman2
Frequent Advisor

Re: XP24000 disk utilization problem

Because max utilization on FC links never exceeds 800Mbit/s so clearly not a bottleneck there.
Torsten.
Acclaimed Contributor

Re: XP24000 disk utilization problem

It can depends on a lot of things - XP disk configuration (RAID1 vs. RAID5; 2D+2D; 6D+2D, etc.); high performance vs. normal mode; port mappings, switch ports; LVM configuration, etc...

Hope this helps!
Regards
Torsten.

__________________________________________________
There are only 10 types of people in the world -
those who understand binary, and those who don't.

__________________________________________________
No support by private messages. Please ask the forum!

If you feel this was helpful please click the KUDOS! thumb below!