3Com NBX 100 Administrator's Manual - page 91
Disk Mirroring
91
Verifying a Failed
Disk Drive
If either disk fails while in a fully mirrored state, the system continues to
operate. The disk status light states described in
Table 21
indicate which
drive has failed.
To verify the status of a disk drive, see the Disk Status window:
1 Log on to the NBX NetSet utility using the administrator login ID and
password.
2 Click Reports > System Data
3 Click Disk Status.
Reverting to a
Single-Disk System
If disk mirroring is currently active, you can convert the system to operate
with a single disk. You need a Phillips screwdriver to complete this
process.
Flash codes indicate disk problem:
■
2 flashes: No valid disk (system is halted)
■
3 flashes: Two valid disks, but they are not
paired (system is halted)
■
4 flashes: Configuration problem (system is
halted)
■
5 flashes: Two disks present, but no
mirroring license
N/A
Flashing Flashing On
Using disk 0 (zero) only
N/A
On
Off
On
Using disk 1 only
N/A
Off
On
On
Synchronizing — disk 0 is valid, disk 1 is
becoming a fully mirrored disk. LED 3 flash rate
indicates progress.
If LED 3 stops normal flashing and intermittently
flashes twice, the mirroring process has failed.
N/A
On
Flashing On
Synchronizing — disk 1 is valid, disk 0 is
becoming a fully mirrored disk. LED 2 flash rate
indicates progress.
If LED 2 stops normal flashing and intermittently
flashes twice, the mirroring process has failed.
N/A
Flashing On
On
LED 2 and LED 3 flash alternately: the two disks
are resynchronizing
N/A
Flashing Flashing On
Synchronized
N/A
On
On
On
Table 21 Disk Status Light States (continued)
Explanation
LED 1
LED 2
LED 3
PWR