If it is an IDE model (the Orignal and Home Server models), then make sure that the jumpers are set it make it the Master/Only drive.Many drives come with the jumpers set to Slave on the assumption that they are being added as an additional drive to an existing PC.If the new disks are of size 500Gb or less then proceed as follows: If you want to use disks that are larger than 500Gb then see this article on Tera Station and Larger Hard Disks.Tera Stations internally run the Linux operating system.If a single disk has failed in a RAID5 array, then the system can be recovered without reasonably easily without any data loss.
Firmware from other sources should work fine as long as it is telnet enabled. A rudimentary one is included with Windows which you can invoke by typing a command of the following form into the Windows Run box: A freeware one called Pu TTY is recommended as a much better alternative.
Spurious reports of disk failures seem to be quite frequent, and are particularily likely to happen after a power failure.
The best way to do this is to attach the drive to a PC and run the manufacturer's disk diagnostic software to check the drive.
Buffalo hides this from the average user by providing the system "packaged" with a browser based GUI to control and configure it.
Telnet enabled firmware allows users to log in using a telnet client to control and manipulate the system at the Linux command line level.