Hot-Plug Hard Disk Drive - NEC Express5800/T120d User Manual

Chapter 2 Preparations
1.22

Hot-plug Hard Disk Drive

The server can contain HDD trays to connect with hard disk drives.
A hard disk drive mounted on a dedicated tray can be purchased. Install the hard disk drive on the server with
it mounted on the tray.
− 3.5-inch hot-swap HDD cage can contain four disk drives per one HDD cage.
− 2.5-inch hot-swap HDD cage can contain eight disk drives per one HDD cage.
− A unique port number is assigned to each slot.
Note the following precautions to install hard disk drives.
•
You may need to change jumper switch setting or cable connection to build a RAID system.
•
In 3.5-inch HDD cage, hard disk drives having different capacities, interface types, or rotational speeds
cannot be installed together.
•
In 2.5-inch HDD cage, hard disk drives or SSD having different capacities, interface types, or rotational
speeds can be installed together, if the following conditions are satisfied:
Mixture of SAS HDD , SATA HDD, SATA SSD and SAS SSD in 2.5-inch HDD cage
− You need to prepare the followings:
One to three RAID Controllers (when two or three RAID Controllers are installed, they must be of the
same model.)
One to three 2.5-inch HDD cage
Two to six internal SAS cables
− You need to prepare RAID Controller if internal disk drives of different types are installed together.
− In the specific RAID group (pack), HDD and SSD cannot be installed together.
− Three types of internal drives cannot be installed together under the specific RAID Controller (in the
same HDD cage).
− To avoid mixture of different types of disk drives in specific pack, specify a hot spare disk for the disk
drive of the same type.
− When several RAID Controllers are to be installed, they must be of the same model.
− With specific RAID Controller, connecting disk drives extending over several HDD cages is not
allowed.
Important
Use hard disk drives specified by NEC. Installing a third-party hard disk
drive might cause a failure of the server and the hard disk drive.
Express5800/T120d User's Guide
1. Installing Internal Optional Devices
121