MSA500 hangs

[Max Sorokin]

Hello All,

We have a DL380 Packaged Cluster which contins 2 HP ProLiant DL380 servers with WIN2000 and MSA500 storage.
We change the cache policy from 50 read/50 write to 10 read/90 write.
On the next day MSA500 hanged and no error messages were present in the EventViewer or Storage console, but the situation looks like the servers lost connect with the storage.
In the attachment you will find all the necessary information.

Help me please, its very important.
Thank in advance.
Max

/**********System configuration*************
--------------------------------------------
Controller Smart Array Cluster Controller
Bus Interface 64-Bit PCI

RAID ADG status Enabled
Host Controller Smart Array 5i Controller
Host Controller Slot Number 0
RAID Array ID ONE.LT
RAID Array Serial Number 8A3BJN72S00F
Firmware Version 1.70
Rebuild Priority Low
Expand Priority Low
Current Surface Scan Delay 15 sec
Number of Arrays 2
Number of Logical Drives 3
Number of Physical Drives 9
Physical Drives Attached to Port 1 Box 1 : Bay 1, 36.4 GB
Box 1 : Bay 2, 36.4 GB
Box 1 : Bay 3, 36.4 GB
Box 1 : Bay 4, 36.4 GB

Physical Drives Attached to Port 2 Box 1 : Bay 8, 36.4 GB
Box 1 : Bay 9, 36.4 GB
Box 1 : Bay 10, 36.4 GB
Box 1 : Bay 11, 36.4 GB
Box 1 : Bay 14, 36.4 GB

All Physical Drives Assigned Yes
Redundancy Status OK
Redundant Type Primary

Array Accelerator
Present Yes
Cache Status Enabled
Accelerator Ratio 50% Read /50% Write
Read Cache Size 64 MB
Write Cache Size 64 MB
Battery Pack Count 1
Battery Status OK

ARRAYS

Array A
Number of Logical Drives 1

Physical Drives Attached to Port 1 Box 1 : Bay 1, 36.4 GB
Box 1 : Bay 2, 36.4 GB

Physical Drives Attached to Port 2 Box 1 : Bay 8, 36.4 GB
Box 1 : Bay 9, 36.4 GB

Online Spare Drive(s) Box 1 : Bay 14, 36.4 GB

Unused Space on this Array 192 KB


Array B
Number of Logical Drives 2

Physical Drives Attached to Port 1 Box 1 : Bay 3, 36.4 GB
Box 1 : Bay 4, 36.4 GB

Physical Drives Attached to Port 2 Box 1 : Bay 10, 36.4 GB
Box 1 : Bay 11, 36.4 GB

Online Spare Drive(s) Box 1 : Bay 14, 36.4 GB

Unused Space on this Array 192 KB