Well, I wanted to share my experience with the tivohd "official" expansion drive...hope this doesn't get too long!
I ordered one from the tivo site, as you all (probably) know, only one drive is supported for the tivohd, the western digital "dvr expander". Arrived okay, went to hook it up, and......nothing! The tivohd didn't see it at all. (by the way, I have already hooked up a different drive to my s3, that went flawlessly.)
So, I tried again, and this time, the thd (tivohd) just sat on the "welcome, powering up" screen. forever. Well, for at least 20 minutes. I think I let it go 30 minutes the first time. When I disconnected it, the thd came up fine. So, I called tivo tech support - after all, this is the "officially supported" drive for the thd, right?? Yes. So, after working with them for an hour or so, we determined that the esata cable was bad. Actually, I guess I determined it...since I happened to have another cable on hand, it was my idea to swap the cable to see if that was the problem. After all, the drive was powering up (light was on and drive was spinning).
Here's issue #1 - I wanted to try the cable because apparently, if there's a problem with the dvr expander drive that you order from *Tivo*, apparently YOU have to ship your drive back to them, then they have to send it to WD to get repaired...! C'mon...if they "support" the drive, then they should send you a replacement, stat, and you can then use the same box (with a pre-printed/pre-paid label!) to send back the bad one, and let them deal with it!
So, then I said I just wanted a new cable. Tivo said they don't have any, I have to call WD. Okay, so I call WD. They said it's not an oem drive, I have to call Tivo, and no, they won't send a replacement cable, but I can buy one!!! The WD guy (from India...) was kind of snooty about it, frankly.
Incredible...so, I call tivo back...they said (to their credit), okay, we'll reimburse you so you can order the cable from them (and at my suggestion that I deserved something more for this hassle, they also credited me with one month's service). I suggested that maybe they should keep cables on hand, since they "officially" support this drive - and that I could have gotten a (somewhat equivalent?) cheaper drive elsewhere, of course! I bought THIS ONE because of the "official" support! Then I had to call WD back to order the cable.
So, after around 2 hours of phone nonsense, I guess it's all okay now (hopefully my cable is on the way), but it's too bad that I had to waste that much time and aggravation on an "officially supported" drive.
I just wanted to share in case anyone experiences something like this! I'm not saying don't get it, though - it is nice to see the tivohd say it has 86 hours of hd storage available!