IBM 392, 387, 393, 391, 389, 388, 441, 390 manual disk drive bay

• There is a 3.5-inch hot-swap hard disk drive or a dummy hard disk drive tray installed in each hard

disk drive bay ( 5

to

12).

Note: The number of the installed hard disk drives varies by model. For the vacant drive bay, there is a dummy hard disk drive tray to cover the place.

•For information about the supported expansion card, see “System board components” on page 42.

•Depending on the model, your server might come with a screw-secured, non-hot-swap power supply or hot-swap redundant power supply module(s).

•For more information about the memory modules, see “Memory module installation rules” on page 90.

Chapter 3. Product overview 27