1) Disable HP Storage Agents
This will remove the storage agent options from the Insight Agents as below:
Before being disabled
http://theether.net/images/StorageAgentEnabled.png
After being disabled
http://theether.net/images/StorageAgentDisabled.png
From the ESX Service Console run the following command:
service hpasm reconfigure
Press <Enter> to all questions except the following which should be answered no:
Storage Agent Startup Policy
Do you require Storage Agent support (y/n) ? (Blank is y): n
2) Scan for new storage devices and new VMFS volumes seperately
From the VirtualCenter Client:
- Select the ESX host
- Select the Configuration tab
- Select Storage Adapters
- Click Rescan in the top right
- Uncheck Scan for New VMFS Volumes and click OK
- Once the scan has completed click Rescan again
- Uncheck Scan for New Storage Devices and click OK
NB: This is unconfirmed by VMware
"If you are using VI client 2.0.1 the rescan san will scan for both new storage adapters and new vmfs volumes at the same time which causes LUN thrashing and hangs the server. In version 2.0 it scans them one at a time."
http://virtrix.blogspot.com/2006/12/vmware-esx-freeze-on-san-rescan.html
NB: This is now confirmed by VMware (24-12-2007)
ESX Server Host and Virtual Machines Not Responding after Clicking the Rescan Button to Scan for New Storage Devices
http://kb.vmware.com/kb/10229
ESX Server 3.0.1, Patch ESX-1000039: vmkernel Update
http://kb.vmware.com/kb/1000039
3) Disable USB Devices in BIOS
There have been reports that disabling USB on the server has resolved this issue:
"We found that disabling USB in BIOS caused the ASR's to stop."
"We've been running for almost 3 weeks without issue since disabling USB. Prior, we consistently saw ASRs between 1-5 days uptime."
http://www.vmware.com/community/thread.jspa?threadID=56837&start=50&tstart=0
