I have a few questions on ESXi that I'd like to clear up. I recently purchased a Dell PowerEdge 1950-III with 16 gigs of ram, 2x 146gb 2.5" SAS drives, dual L5410 QC processors, PERC 6/i RAID controller, DRAC, etc. I'm planning to use this system in a colocation center about 2 hours away to host a few websites and possibly a game a server. I hear the way to install ESXi these days is to put it on a USB stick and boot off that or use a SD card. I'm concerned about the reliability of cheap flash memory so I was thinking about buying a SD to SATA adapters and mirroring two SD cards - does this seem like a viable option? Also, I believe ESXi 5.5 requires teh vSphere client to manage the VMs. I'm on a strict budget and would like to avoid investing ESXi for now... is 5.1 still free indefinetly?