4.2.1 I/O Modules
The I/O module is a component that controls how the controller and the drives interact.
It connects with controllers.
A drive enclosure has one or two I/O modules.
When a drive enclosure has one I/O module, another module can be added during system operation. If one of
the I/O modules fails in a drive enclosure with two I/O modules, the failed I/O module can be replaced while
the system is running.
■
Drive Interface Ports
This port is for connecting controller enclosures.
The drive interface port specifications are shown below.
Table 4.7 Drive Interface Port Specification (I/O Module)
Interface Transfer rate (max.) Connector type
Number of ports for each I/O
module
SAS 6Gbit/s SFF-8644 1
4.2.2 Power Supply Units
The power supply unit transforms input AC power from a power socket to DC power and supplies power to
each component. Each power supply unit contains fans.
A drive enclosure has two power supply units, which makes it possible for a failed unit to be replaced while
the system is running.
4.2.3 Drives
Up to twelve 3.5" drives can be installed.
Drives can be added during system operation. When an error occurs, replacement operations can be per-
formed while the system is running.
Table 4.8 Drive Specification for 3.5" Drive Enclosures
Product name Drive interface Storage capacity Rotational speed
SAS disks Serial Attached SCSI 900GB, 1.2TB 10,000rpm
Nearline SAS disks 2TB, 4TB, 6TB 7,200rpm
Chapter 4 Hardware Configurations
4.2 Drive enclosure (3.5" type)
58
FUJITSU Storage ETERNUS DX60 S3 Disk storage system
Overview
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