Filter
Top Products
190 SANRAD V-Switch User Manual
Safe Mode
The V-Switch operating status includes the ability to enter into safe mode in
the event of booting problems or in an attempt to clear significant amounts
of a V-Switch configuration. There are two ways to enter safe mode:
Automatically during a reboot.
Manually via CLI.
There are four safe mode reboot options:
Level 0: Reboot in normal mode.
Level 1: Reboot with last good configuration.
Level 2: Reboot with default factory database.
Level 3: Reboot with default factory system.
Automatic Safe Mode
When the V-Switch reboots, either after upgrading the V-Switch software or
any other time that environmental irregularities require, there may be
database corruption. To prevent potential damage to the database, the V-
Switch enters safe mode.
Safe mode can only be navigated from a console with a local, direct RS232
connection to the V-Switch.
When a V-Switch has boot problems and enters safe mode, its LCD panel
displays:
Init Problem
Safe Mode
Level 0: Reboot in Normal Mode
If the V-Switch is rebooted during initialization it will reboot in safe mode 0.
This gives the V-Switch another opportunity to try to reboot normally in the
event that there are in fact no problems with the database.
Level 1: Reboot with Last Good Configuration
Save the V-Switch
configurations to the
database as the last
good configuration by
reboot after major
configurations.
Each time the V-Switch successfully boots up, it saves the database as the
last good configuration. If the last time the V-Switch booted was also the
first time the V-Switch booted, the database will be empty. All V-Switch
configurations will be lost. Therefore, SANRAD strongly urges you to
reboot the V-Switch after major configurations to save the configuration
database in the event of rebooting problems in the future.
Rebooting with the last good configuration may cause data corruption. For
example, the last good configuration may contain a striped volume
composed of two children. Since the last good configuration, that striped
volume has been reconfigured to include three children. If the V-Switch