HP ProLiant DL360 G3

I recently purchased several of these boxes and they continue to impress. Being only 1U in size, they're ideal when you need lots of servers and space is at a premium.

It's good to get a 1U server that still has hot plug drives. I'm not so keen on the lower spec'd DLs that have the fixed drives, or even the ATA drives. The only thing that is a slight nusience is that there is no external scsi connector. If you're looking for a small server to drive, say for instance backups on a tape library, then you're going to need to fit another scsi card, or just buy a DL380 instead.

They have also done a good job with the power cables. Angled cables to help with cabling multiple 1U server together.

The only other thing that can be annoying is the rails that come with the server. They're a bit fiddly compared to a DL380, and they don't extend fully from the rack so if you want to open up the server you need to power down and remove it from the rack.