Seagate ST31500341AS 1.5TB

bonez wrote:

I think I'm seeing some pausing/slowness when copying stuff back to the four new 1.5TB SD18s I put in. Just copying via CIFS it appears to stall, then resume. Haven't tried streaming back from the NAS yet from my front-end devices but will be doing that soon. One has one reallocated sector but is holding steady..and no ATA errors. Likely to swap this one for the fifth spare I bought and send the bad one back.

If you have any reallocated sectors, then the pausing could be the usual click death. When the drives run over a bad sector, sometimes they retry the read or write over and over again for long enough to stall the OS.

The other possibility is that the SD18 firmware doesn't actually fix the problem, like the 1A firmware. So, maybe the seagate support person mentioned in the previous post was wrong. Maybe the SD18/19 firmwares are not the same as the SD1A firmware...

In either case, I'm not taking any chances. I had all CC1G and I loaded CC1H on all of them. We'll see how that goes. I just put the second disk in the ReadyNAS. I'll probably stop at 3 and check it for the stalling bug before I put in the 4th. I think once I put in the 4th, it will expand after the rebuild and I won't be able to go back to the 750s if I want.

Actually, I forget. Does the ReadyNAS ask you if you want to expand the array after you put in 4 larger disks? Or does it just automatically do it?