Hi,
We have a couple of new Hp Proliant DL380p running Xenserver 6.2 SP1. On one server, the write performance is normal for 1-2 days, and then it drops to 1/50 of normal performance. The read perfomance is not affected.
We have upgraded firmware to all the newest versions, upgraded to Xenserver 6.2 SP1, installed newest HPSA driver from Citrix (ver 3.4.4-125), reformatted the RAID, tried RAID 6/10, removed the server from pool and added it again.
We have also installed a SATA disk on the onboard sata controller, and it is not affected by this problem.
Nothing seems to make any difference. There is no error in the ILO from the controller or disks. This is driving me mad, as everything is running, just extremely slow, and after each firmware/driver/version update, it is running fine for a couple of days, then it slows down. A reboot fixes the problem for a while again.
I have attached two pictures, the first one is an Atto test from when the system is working, and the second, when it is slowed down.
A bit info:
Xenserver build 70446c
Proliant dl380p
Dual Intel Xeon CPU E5-2620 0 @ 2.00GHz
System ROM: P70 12/20/2013
HP Smart Array P420i Controller
Firmware Version 5.22
Any info suggestions are welcome, as I am running out of options.