69

ATTO Technology Inc. Diamond Storage Array Installation and Operation Manual
7.0 Hardware Maintenance

The disk drive sleds, blower assemblies, power supplies, host interface cards, and system man agement

card may be replaced with identical or upgraded parts.

WARNING
The only way to completely de-energize the unit is
to turn off both power
supplies and unplug both
power cords from the
back of the unit.
Turning the power switch
to the Stand-by position
on one power supply
does not completely turn
off power to the array; it is not an AC on-off switch.
Power may still be in the unit through the other
power supply.
CAUTIONCAUTION
All modular components must be replaced
by qualified personnel only.
Do not leave empty openings in the Diamond
Storage Array. Empty openings affect airflow and
may cause the unit to overheat and shut down.
Components are electrostatic sensitive. Use
proper grounding methods when working with or
around the array.
Always store spare components in proper ESD
containers when not in use.

The power supply and blower assembly may be

replaced while the unit is running. (Refer to

Hot Swap

Operating Instructions on page 71

)

• Host interface cards and management cards may only
be replaced when the Diamond Storage Arra y is off.
Backup the unit fully before replacing these
components.
• You may remove a disk drive sled while the array is
powered on. Refer to the instructions in

Hot Swap

Operating Instructions on page 71
for details.
To remove a management card
1 Power down both power supplies.
2 Loosen the screws holding the card in place.
3 Pull out the assembly and replace it with
another.
4 Securely tighten all screws after replacing the
component.
To remove a disk drive sled (Exhibit 7-2)
1 Loosen the screws on either side of the assembly
2 Pull on the assembly’s handle and carefully
slide it out of its bay.
3 Replace the disk drive sled with another sled.
To remove a Host Interface Card
1 Power down both power supplies
2 Remove any cable attached to the port.
3 Loosen the retaining screws
4 Pull the Host Interface Card out of the unit.
5 To replace the card, push it back into the unit
and tighten the retaining screws.
To remove the power supply (Exhibit 7-4),
1 Press the Stand-by power switch to the off position
2 Remove the power cord
3 Using a No. 1 Phillips screwdriver, loosen the
screws holding the assembly in place.
4 Pull out the assembly and replace it with
another.
5 Securely tighten all screws after replacing the
component.
To remove a blower assembly (Exhibit 7-4),
1 Using a No. 1 Phillips screwdriver, loosen the screws
holding the assembly in place.
2 Pull out the assembly and replace it with
another.
3 Securely tighten all screws after replacing the
component.
WARNING
Do not leave empty openings on the front
or rear of the Diamond Storage Array under
any circumstances.
Power Switch Positions
On Stand-by
E
xhibit
7
-1: The management card may be accessed via a
s
erial port DB-9 connector or an optional Ethernet
connection.