Speaking of capacity, if you're going to use an entire drive, is it advisable to leave a certain % unused? Also, as you have ten of 'em, would you advise any HDD manufacturers to stay away from - seems most people go with WD, but aren't there others that are well-suited for this type of application?
I try to keep mine about 50-60% full. I've got an HR24-500 that's got ~ 19% of capacity left. I'm just trying to see if the 24s suffer from the same problems the other HRs do when you fill them to 30% of capacity. But, I'm not even sure the other HRs still are susceptible to bogging down when the HDD reaches the 30-20% Available mark. Used to be, you got them that full and the HR would really slow down. That's why even a 1TB isn't enough for some of us. Doesn't matter the size of the HDD, just the percentage of capacity used matters (or used to).
That 24-500 shows no sign of bogging down BTW.
We've had so much good luck with the WD drives that it seems sensible to just keep on using them. Some members have installed Seagate 5400RPM HDDs in/on their HRs and they seem to be working well. Right now, I'd stick with the WDs.