Hard Disk Drives And Solid State Drives; Sas Raid Controllers An Bbus - Fujitsu Primergy RX900 S2 Operating Manual

2.2.3

Hard disk drives and solid state drives

The server can be equipped with up to 8 HDD/SSD modules. Each module can
accommodate a SAS/SATA hard disk drive/solid state drive with a 2.5-inch
format.
The modules are connected to the SAS backplane wirelessly in a hot-plug
configuration.
Basic rules for the mounting order of solid state drives and hard disk drives:
1. If solid state drives and hard disk drives are to be installed, the solid state
drives are installed first.
2. Solid state drives with different capacities are installed from highest to lowest
capacity.
3. Hard disk drives with different capacities are installed from highest to lowest
capacity.
4. Hard disk drives with different rotation speeds are installed from highest to
lowest speed.
5. If drives using SAS bus technology and drives using SATA bus technology
are to be installed, drives using SAS bus technology are installed first.
2.2.4

SAS RAID controllers an BBUs

The RX900 S2 server can be configured with the following 8-port SAS RAID
controllers:
Up to one Modular RAID controller in PCIe slot #8 to support up to 8
●
SAS/SATA hard disk or solid state drives located on the front side of the
server. This RAID controller has to be installed if at least one internal
HDD/SSD module is configured.
Up to two SAS RAID controllers to support up to 8 hard disk drives
●
connected via expansion cards.
I
The RX900 S2 server can be equipped with one Modular RAID controller
and two SAS RAID controllers but only for two of these RAID controllers
a BBU can be installed.
RX900 S2
Operating Manual
Functional overview
27