Here is our Top 20 KB list for January 2012. This list is ranked by the number of times a VMware Support Service Request was resolved by following the steps in a published Knowledge Base article.

• Methods of upgrading to ESXi 5.0 (2004501)
• Enhanced vMotion Compatibility (EVC) processor support (1003212)
• Manually deleting linked clones or stale virtual desktop entries from VMware View Manager (1008658)
• Virtual machine does not power on because of locked files (10051)
• Troubleshooting VMware High Availability (HA) (1001596)
• Restarting the Management agents on an ESX or ESXi Server (1003490)
• Installing async drivers on ESX/ESXi 4.x (1032936)
• Consolidating snapshots (1007849)
• Using esxtop to identify storage performance issues (1008205)
• Understanding virtual machine snapshots in VMware ESX (1015180)
• Collecting performance snapshots using vm-support (1967)
• Committing snapshots when there are no snapshot entries in the snapshot manager (1002310)
• Best practices for virtual machine snapshots in the VMware environment (1025279)
• Collecting diagnostic information for VMware Fusion (1003894)
• Upgrading to vCenter Server 5.0 best practices (2003866)
• Collecting diagnostic information for VMware ESX/ESXi using the vSphere Client (653)
• Best practices for using and troubleshooting VMware Converter (1004588)
• Unpresenting a LUN containing a datastore from ESX 4.x and ESXi 4.x (1015084)
• Virtual machines stop responding when any LUN on the host is in an all-paths-down (APD) condition (1016626)
• Purging old data from the database used by vCenter Server (1025914)
• Upgrading to ESX 4.1 and vCenter Server 4.1 best practices (1022104)

Here is our Top 20 KB list for December 2011. This list is ranked by the number of times a VMware Support Service Request was resolved by following the steps in a published Knowledge Base article.

• Upgrading to vCenter Server 5.0 best practices (2003866)
• Enhanced VMotion Compatibility (EVC) processor support (1003212)
• Collecting diagnostic information for VMware ESX/ESXi using the vm-support command (1010705)
• Virtual machine does not power on because of locked files (10051)
• Troubleshooting VMware High Availability (HA) (1001596)
• Methods of upgrading to ESXi 5.0 (2004501)
• Restarting the Management agents on an ESX or ESXi Server (1003490)
• Recreating a missing virtual machine disk (VMDK) descriptor file (1002511)
• Best practices for virtual machine snapshots in the VMware environment (1025279)
• Consolidating snapshots (1007849)
• Collecting diagnostic information for VMware Fusion (1003894)
• Best practices for using and troubleshooting VMware Converter (1004588)
• Diagnosing an ESX or ESXi host that is Disconnected or Not Responding in vCenter Server (1003409)
• Manually deleting linked clones or stale virtual desktop entries from VMware View Manager (1008658)
• Downloading and installing VMware Fusion (1005466)
• Using esxtop to identify storage performance issues (1008205)
• Enabling syslog on ESXi 3.5 and 4.x (1016621)
• Block size limitations of a VMFS datastore (1003565)
• Purging old data from the database used by vCenter Server (1025914)
• Upgrading to ESXi 5.0 best practices (2005102)

Here is our Top 20 KB list for November 2011. This list is ranked by the number of times a VMware Support Service Request was resolved by following the steps in a published Knowledge Base article.

1. Troubleshooting VMware High Availability (HA) (1001596)
2. Recreating a missing virtual machine disk (VMDK) descriptor file (1002511)
3. Best practices for using and troubleshooting VMware Converter (1004588)
4. Enhanced VMotion Compatibility (EVC) processor support (1003212)
5. Restarting the Management agents on an ESX or ESXi Server (1003490)
6. Upgrading to vCenter Server 5.0 best practices (2003866)
7. Consolidating snapshots (1007849)
8. Virtual machine does not power on because of locked files (10051)
9. Using esxtop to identify storage performance issues (1008205)
10. Collecting diagnostic information for VMware Fusion (1003894)
11. Purging old data from the database used by vCenter Server (1025914)
12. Enabling syslog on ESXi 3.5 and 4.x (1016621)
13. Diagnosing an ESX or ESXi host that is Disconnected or Not Responding in vCenter Server (1003409)
14. Manually deleting linked clones or stale virtual desktop entries from VMware View Manager (1008658)
15. Cloning and converting virtual machine disks with vmkfstools (1028042)
16. Collecting diagnostic information for VMware ESX/ESXi using the vm-support command (1010705)
17. Upgrading to ESX 4.1 and vCenter Server 4.1 best practices (1022104)
18. Collecting diagnostic information for VMware ESX/ESXi using the vSphere Client (653)
19. Understanding virtual machine snapshots in VMware ESX (1015180)
20. Virtual machines stop responding when any LUN on the host is in an all-paths-down (APD) condition (1016626)