It seems that the drives don't spin up, but I know the drives work I hooked them up to my computer via external USB.
What up with this?
after plugging in and having no access to drives log inte web interface and do a reboot from there. then they should spin up properly you should be able to have access to your drives.
I upgraded my drives to Seagate Barracuda LP 1TB last weekend and I have the same problem with the drives not spinning up after a poweroff/poweron. The drives indeed start when you reboot over the admin page. I did some extensive testing to see if this could break my RAID 1 config, but it looks like everything is ok.
As for temperature / noise these drives are very nice. Also the speed is very OK; I get transfer speeds of more than 50MB/s over NFS.
So I wouldn't recommend this setup in a production environment, but other than that it seems to be working OK (apart the second reboot).
I have seen other postings regarding Seagate drives. I think it is something to do with the power they draw when they spin up. The N2100 does not supply enough to allow the drive to spin up.
I have just replaced my two ageing Hitachi Deskstar 500GB drives with two 2TB Western Digital WD20EARS Caviar drives. I compared the drive specs for power and noise and they were very good.
I spent all day backing up the data to other PC's with bits of space available on their hard drives. The easy bit was turning off the N2100, removing the old drives and putting in the new ones. On booting the N2100 recognised them and I'm in the process of establishing them as a Raid 1 set. The web page status says it's Building: 7% with just over 600 minutes remaining. Thats 10 hours!
In response to a technical question Thecus Tech Support have stated "The N2100 supports HDD's up to 500GB, the WD EARS you have installed are 2TB. Next that, the EARS drives do have a block size of 4K, but the N2100 supports 512 byte block sized HDD's only. This will cause that the RAID is misaligned, which will cause stability issues."
The official line is that the N2100 is limited to 500GB disks with 512 byte blocks. Bigger disk drives may work but are not supported. In my case the 2TB Western Digital WD20EARS Caviar drives seem to work but the iTunes Server stopped working. I'm also concerned that due to the stability issues the Raid array may fail. I think its time to look for something to replace the N2100.
I'll add that I tried out 2 x WD20EADS (Mine were really EARS that needed a bit of poking about in the firmware ). They worked for a while but kept losing RAID 1 status and were therefore a bit unstable. These drives aren't recommended by WD for industrial RAID systems, but are considered to work well for consumer level RAID - In my case, they didn't. Anyway, I just replaced them with the Samsung 1TB's 7200RPM ones that I had in there earlier.
Does anyone still have the WD 20EARS running in a RAID1 setup? I was hoping to replace the 500GB drives currently in the N2100 with something larger, but it seems there are mixed experiences with the WD drives. Some of the posts are a few months old, so I was looking for anyone who still has them running.