Asante 10T Hub/24 Specifications download pdf (Page 188)

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Fault Alarm

If a drive or any other component in the MegaDrive array fails, the

MegaDrive sounds an alarm and displays the problem in the LCD

interface. The LCD interface shows what has malfunctioned, the time

and date of the malfunction, the total number of malfunctions

occurring, and what to do to Þx the problem.

To silence the alarm, press the Down button next to the LCD.

Power Supplies

Each MegaDrive unit uses three identical power supplies (see

Figure 11-9). During normal operation, all three power supplies are

active and supply an equal share of power to the MegaDrive.

The power supplies are hot swappable. If a power supply fails, you

can change it without shutting down the MegaDrive.

The power supply status LEDs above the power supplies indicate the

status of the power supplies. The LEDs and the power supplies are

numbered. During normal operation, the LEDs are green. If a power

supply fails, the LED corresponding to that power supply turns red.

Fast, Wide SCSI-2 Ports

The MegaDrive unit contains two fast, wide SCSI-2 ports. AvidNet

uses these ports to connect MegaDrives to the server or another

MegaDrive, depending on the system conÞguration.

Connections

AvidNet storage is conÞgured (striped) in groups of six RAID units.

The racks house up to four RAID units. Each group of four MegaDrive

RAID units (1 volume) can store approximately 24 hours of media

data at AVR-70 resolution. In conÞgurations of twelve RAID units or

fewer, each RAID unit is connected directly to a SCSI port on the

server via a differential SCSI cable as shown in Figure 11-11.

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Asante 10T Hub/24 Specifications Page 188