What OS/FS to use for 16TB storage array? 1TBx16!!

Dan Cabrera writes: "So I just took delivery of a large package (pickup truck bed sized box) labeled 'server' — turns out it's the one I've been waiting for a while from a client. We had some miscommunication and I assumed this was a 2-4, maybe 5TB system for use as a production content shared drive, but it turned into a real monster, SuperMicro SC-836 with HighPoint 2240 Controller and *16*x*1TB* Hitachi drives in a RAID5 array. It's got WinXP64 loaded, but there must be a better solution after reading of ZFS and related technology now available as open source, no? Looking forward to your comments and suggestions! I'll repost with some benchmarks as this puppy grows up (into the wee hours of the morning I'll work :) Happy SD'in! PS: Just need a large drive to save rendered projects to and backup music/other projects (This is for a world known DJ, so the each tour/show can involve a LOT of media!) ...and, how the heck am I gonna do off-site backup for this in event of disaster? Ay-yay-yi!"