How does VmWare Workstation perform with SSD drives?
I currently run VM Workstation 8 on a set of 3 OCZ Vertex 3 240 Max IOP SSDs in a RAID 0 set. Performance is great. Since there is no TRIM in RAID I just leave about 100Gb unused so that garbage collection can still take place. Lack of TRIM has never been a factor and I'm running about 8 servers including an iSCSI server. With iSCSI I just serve up disk images and the performance is super. Clustering is very doable, even on a good laptop. Running VMware ESXi is also very doable. SSD makes it happen.
TRIM is used to explicitly tell SSD which blocks are free for 'garbage collection'. If you directly attach SSD to a VM guest and let guest handle TRIM, you will accomplish this. However, it is my understanding that if you keep your vmdk files on a OS/FS that supports TRIM, then you should be all set. So, Vmware Workstation on Win 7 which supports TRIM should be good enough for longevity and performance of your ssd drive.