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14 C637M-B (10/03)
OPERATION
The storage unit has been preconfigured to operate using RAID Level 5 or RAID Level 5+1 technology. Pelco recommends RAID
Level 5+1. In Level 5+1, a hot spare drive is included. If a hard drive is removed or fails, the redundant data, on the remaining
drives, relocates automatically to the hot spare and begins the reconstruction process without user intervention. In Level 5, all
data and parity blocks are divided between the hard drives in such a way that if any hard drive is removed or fails, the data on
the missing hard drive can be reconstructed using the data on the remaining hard drives.
The LCD display on the front of the unit shows your settings. The characters indicate hard drive information. An “S” on the LCD
display means that the storage unit has a spare hard drive and is operating using RAID Level 5+1. If an “S” is not displayed, the
storage unit is operating using RAID Level 5.” See Table A for an explanation of each character.
Table A. LCD Display Status Characters
Character Definition
X There is not a hard drive installed on the slot.
I Hard drive was detected.
S Spare hard drive.
A Rebuilding the new hard drive.
R The previous online hard drive has been removed.
1 The hard drive is part of array 1.
2 The hard drive is part of array 2.
Flashing square Indicates that the unit is operating properly.
ZZ Flashes when the host has access to the unit.
WW Flashes when the memory writes the cache to a hard drive.
The front of the unit also has six buttons. See Table B for an explanation of each button’s function.
Table B. Button Definitions
Button Definition
Controller button Press to view the configuration of the storage unit, such as the memory size, firmware
version, and the brand and capacity of the hard drives.
ENC button Press to see the operating status of the storage unit, such as the hard drive status,
temperature, power supplies, voltage, and cooling fans.
Up arrow/Quit button Used in conjunction with the Controller and ENC buttons. Press to scroll through the
information on the LCD display, to move through each menu, or to go back to the previous
menu.
Down arrow/Info button Used in conjunction with the Controller and ENC buttons. Press to scroll through the
information on the LCD display or to move through each menu.
Select/C-F button Press to enter the option you have selected or to change the temperature display from
celsius to fahrenheit.
Exit/Alarm reset button Press to return to the previous menu or to stop an alarm.