Fujitsu PRIMERGY RX2540 M4, Upgrade And Maintenance Manual, Page: 138 / 639

138 Upgrade and Maintenance Manual
RX2540 M4
Hard disk drives (HDD) and solid state drives (SSD)
7.1 Basic information
The HDD or SSD and the installation frame together make up the HDD module
or SSD module.
The server is shipped with one of the following HDD or SSD subsystems:
– 3.5-inch HDD subsystem:
Up to 12 3.5-inch SAS/SATA HDD modules can be installed. The HDD
module is connected to the HDD backplane wirelessly. This allows HDD
modules to be plugged in or pulled out easily.
Hybrid configurations of SAS and SATA HDD modules are supported in
combination with an optional HDD controller.
– 2.5-inch HDD/SSD subsystem:
Up to eight, 16 or 24 2.5-inch SAS/SATA HDD/SSD modules can be
installed.
The HDD/SSD modules are connected to the HDD backplane wirelessly.
This allows HDD/SSD modules to be plugged in or pulled out easily. If the
server has a corresponding RAID configuration, defective HDD/SSD
modules can also be replaced during operation.
Hybrid configurations of SAS and SATA SSD / BC-SAS and BC-SATA HDD
modules are supported in combination with an optional HDD controller.
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In the configuration with up to 8 HDD/SSD modules, the next eight HDD
bays can be equipped with PCIe-SSDs, if two PCIe Retimer controllers
or two PRAID EP5x0i controllers have been installed.
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For information on RAID controllers controlling the HDD/SSD modules
see chapter
"Expansion cards and backup units" on page 235 .