ATTO Technology Diamond Storage Array S-Class User Manual
Page 19
8
Components
BaseT Ethernet
management services card
enables Telnet-based
monitoring and
management. It also
provides the ability to
update the firmware in the
array via FTP. LEDs
farthest to the left indicate
fault, unit ready, Host
Interface Cards A and B
installation status, and the
power status for each
power supply.
To the right of the system
management card are
individual disk drive sleds
which also have LED
indicators for each drive’s
status. Each sled contains
two hard drives. Up to 24
hard drives may be
installed on the 12 sleds.
Empty bays should be
covered by blank faceplates or filled with empty
sleds. Access is provided by loosening two screws
and pulling on the sled handle.
In the rear of the unit are the blower assemblies
which support hard drive, cabinet and power
supply cooling. Correct operation is displayed by
a LED at the top of each panel. The blowers are
held in place by removable screws.
The power supplies for the array are accessible by
loosening two screws and pulling on the power
supply module handle. The power standby on/off
switch is at the top of each module. A yellow LED
indicates caution and a green LED indicates on.
The power cord socket is at the bottom of each
power supply.
Between the power supplies and blower
assemblies are two slots that hold the Host
Interface Cards. The HIC is the connection point
into the array and is available in a 2-Gigabit Fibre
Channel or Ultra 160 SCSI. Host Interface Cards
have fault and on-line or fault and activity LED
indicators, depending on the model.
SCSI
The SCSI card faceplate has a rotary
binary-coded hex switch which allows you to set
the SCSI ID of the array. The SCSI card also has
an in channel, to connect by a cable to the unit’s
communication source, and an out channel,
available for daisy-chaining arrays together or to
complete termination using an external LVD
terminator.
Intelligent midplane (internal)
Disk drive sleds (12)
System Management Card
Power supplies
Host interface cards
Blower assemblies