ST3000DM001 Barracuda 7200.12 3TB

Just a brief update: I've now installed both 3TB drives in my older ReadyNAS Ultra 4 Plus unit. I installed one drive at a time, waiting for the first one to fully sync before installing the second, and then rebooting the ReadyNAS after the second drive was fully synced so it could expand the drive. I've gone from 83% of 4,151 GB used (with four 1.5TB drives) to 62% of 5,543GB used (with two 3TB drives and two 1.5TB drives). So, replacing two 1.5TB drives with two 3TB drives has given me roughly and extra 1.4TB of space, which should be sufficient to last me until the 3TB drives drop in price.

I do find one added side benefit of the new 3TB drives: They seem to run a little cooler than the 1.5TB drives. The two new 3TB drives are running at 100 and 104 degrees F whereas the old old 1.5TB drives are running at 113 and 111 degrees. Because I live in Phoenix, and my home office has a southern exposure (with another wall facing West), the slightly cooler temperatures of the drives are much appreciated. FWIW, the 1.5TB drives are Seagate model number ST31500341AS.

I'm now in the process of creating a volume in my new ReadyNAS Ultra 4 Plus unit using the two 1.5TB drives that I just replaced.