Performance problems on Storage AA3700 and K580

[balaji_17]

I am new to the HP-UX universe and I have a performance problem in one of our customers,

We are using a K580 with storage AA3700 which has a RAID 5 set consisting of 6 18GB disks(48Gb usable).

We are doing a "dd (disk dump)" from the internal disks to the external RAID set. After the dd we are using a lvmerge to merge the second RAID 5 set.

Both the above commands combined used to take roughly ~12 hours to complete. For the past few days with no change in data size we have found the time taken to complete the "dd" has tripled and volume merge has doubled in time.

I need some help to diagnose the problem. If you guys to point me the places I should look at and the commands to run (arraydsp ?) for get to the bottom of the probelm

Thanx
Balaji./

[RAC_1]

Are you sure nothing has changed on system? Any patchting etc?

How AA3700 has been connected to the systems? Do you have any messages in syslog for Fibre Cards. Can you do fcmsutil /dev/td0 for you fcs and check.

Anil

[T G Manikandan]

What configuration of K580 you are running?Have you loaded any extra applications on the machine or any application usage is started on the machine.


check the memory and processor usage.

#swapinfo -ta

#sar -u 5 5

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