SHATFIELD I am a Java developer, and I use Windows 7 in a VM on my MacBook Pro to do my coding (it's a company standard). I used VMWare for a long time, perhaps over a year, and it worked ok, but was not fast enough for me. I decided to test VMWare and Parallels, and Parallels came out on top as far as speed of compilation goes, but not by a wide margin. I decided to switch to Parallels because every little bit helps. I also reinstalled my Mac from scratch, so that it was 100% fresh. After just 2 weeks of using Parallels, I noticed a few things. Firstly, the VM would become unresponsive for long periods of time, perhaps as many as 30 seconds. During this time, I couldn't do anything at all - not even the menu bar in OS X would respond. This always happened at the most inopportune moments; right before meetings, when I had a critical bug to fix, etc. It was incredibly annoying. I did not experience this with VMWare. Secondly, I noticed that I would have whole system lockups sometimes when the computer would sleep. It happened twice while at lunch during the 2 weeks that I used the machine, and then it happened last night while I was sleeping. I came into my home office this morning and noticed that the screen saver was frozen. I tried connecting to the machine from my wife's Mac, but as I suspected, it was unresponsive... forcing me to power off the machine. Upon restarting, the Windows 7 VM was in a "repair loop", that I could not get out of. I restored back to a snapshot from a few days ago, but have since decided to switch back to VMWare, as Parallels is too unstable. YMMV, but if it is close to my mileage, you will be very unhappy with Parallels. (Version 5.0.9370) |