I'm looking at building a new home file server. It needs to be reliable, efficient and quiet. And not too expensiive. I don't think RAID makes sense for me, so it's going to be a single drive. My existing server uses a single Seagate Constellation (es.2 or .3) which has been rock solid for 5 years (24x7) and is pretty cool and quiet, at least in that box. It's mostly idle, and mainly provides SMB and DLNA, but it gets occasional heavy use from backups or some other purpose. I've looked at Seagate Exos, WD Red Pro, WD Gold, HGST Ultrastar He8, older HGST (new old stock from backblaze's list). One of the complaints I come across with those are the noise levels. I never had an issue with the constellation drives, but folks' descriptions of the noise makes me think I can't keep it running in a living space. Is that true? Anything else I ought to consider? I've decided against "archive" and :surveillance"-type drives. I'd prefer high MTBF, but that may not deliver much value in a low-utilization machine. Thanks.