Re: Running out of HD space
The one advantage to the Drobo over something like the HP Media server is that the Drobo comes up as a local drive whereas the Media Server connects via ethernet, so you really need a home network to use it. The Drobo is cheaper as well -- you can find it online for >$500.
I looked at both of those solutions, and I came up with this:
External 10-bay eSATA Enclosure
Coupled with a the necessary 2 port eSATA RAID card, you can cram up to 10TB of drives into it. I've just started out with 3X1TB drives running at RAID5 for 2TB of data storage. I can't do more because XP 32-bit can't handle more than a 2TB array. But I can have multiple RAID5 sets, and I am also looking at some other non-traditional RAID ideas like
FlexRAID. I like this solution because it leaves the files intact, ie, if I lose 2 drives from the RAID5 partition, the entire dataset is wiped out. But if that happens with FlexRAID, whatever drives are still working have all their data. Also, FlexRAID isn't hardware dependent, so I can move the drives here and there and just need to resynch. But it's still immature and so far there's only a CLI, and I will wait for a web based GUI. My plan is RAID5 for now, wait for FlexRAID, get 2 more 1TB drives, transfer that data over, and then set up a 5 disk FlexRAID.
The case is a bit loud (I'm not sure about the db levels of the media server), but I plan on replacing the case fans with quieter ones.
For the OP: I would suggest just installing another 500GB or 1TB drive internally. However, those USB ones are pretty cheap too, and they're fast enough to stream hi-def video. My biggest concern (and the reason I got the 10 Bay enclosure) is that I've lost too many drives and data over the past couple of years, and I have decided that some sort of fault tolerance is a must.