Power supplies, Disk modules, Power supplies disk modules – Grass Valley K2 10G RAID User Manual

Page 38: Power supply1 power supply 0

18 November 2010

K2 10G RAID Storage Instruction Manual

Power supplies

Power supplies

There are two auto-ranging power supplies, each with a power cord. Each supply

supports a fully configured K2 10G External RAID and shares load currents with the

other supply, if it is present. The power supplies are designed so as to protect the disk

drives if you install them while the K2 10G External RAID is powered up. A disk with

power-related faults will not adversely affect the operation of any other disk.

Each power supply has status LEDs visible from the rear panel. The status LEDs are

described in the

“Interpreting power supply status LEDs” on page 60

. You can add or

remove one power supply in the RAID Storage Chassis while the RAID Storage

Chassis is powered up, but the operation must be completed within two minutes. Even

if a power supply is disabled, the fan in the non-functioning power supply can run off

the second power supply to cool the RAID for a couple of minutes.

Disk modules

Each disk module consists of a SAS or SATA disk drive in a carrier assembly. If a

disk drive fails, and needs replacing, you can do so while the RAID Storage Chassis

is powered up. Replacement disk drives begin rebuilding immediately after being

installed. (See

“Removing and installing disk modules” on page 61

The following table shows how disk modules are identified based on the chassis

address and physical location. The chassis with an address set to 0 contains drives

from 00 to 0B; the expansion chassis are numbered X0 through XB, where X indicates

the chassis number.

For information on cabling expansion chassis, see the K2 SAN Installation and

Service Manual

An operating primary RAID chassis must have, at a minimum, the first three physical

drives (00 - 02) installed, as the RAID configuration information is written to these

drives. Microcode is also written to these disks when RAID controller microcode is

loaded.

The SAS and SATA disk drives are shown in the following illustrations. The SATA

drive has an adapter to fit it to the K2 10G RAID Chassis.

BBU IN

MODEM

FLT/LNK

HPE

FLT

A/L

BACKUP

ACT/LNK

LNK/ACT

FLT

5 4 3 2

RDY

LAN

BAT

MNT

ACS

DP1

DP0

HP
1 0