Impediment RS-1600-X24, Руководство пользователя, Страница: 63 / 256

System Configuration
45
Subsystem will not function. You must resolve the problem and restart the X24 Subsystem. If the problem
is not resolved, it will shut down again.
Alarm conditions trigger an event message that displays in the event log.
Table 5–1 shows the temperature and voltage thresholds for each alarm and how to resolve the problem.
To enable or disable the alarm:
1 From SAM, select Manage X24 Subsystem > General Config > Audio Alarm .
The Audio Alarm page displays.
2 Select the alarm option you want.
3 Click Change Configuration .
5.6 Controlling Host Access to the X24’s
Write-back Cache Setting
You can prevent host systems from using SCSI mode-select commands to change the X24 Subsystem’s
write-back cache setting. Some operating systems disable write cache. If cache lock is enabled, the host
cannot change the cache setting. The default setting is disabled.
This option is useful in some environments where the host system disables the X24 Subsystem’s write-
back cache, resulting in degraded performance.
To lock the cache setting:
1 From SAM, select Manage X24 Subsystem > General Config > Option Configuration .
The Option Configuration page displays.
2 Select the Host Control of Write-back Cache option you want.
3 Click Change Options .
Table 5–1 Alarm thresholds
Alarm threshold What to do when the alarm sounds
X24 Subsystem internal temperature
• Warning: 0°C to 4°C and
66°C to 70°C
• Shutdown: <0°C and >70°C
• Check SAM to confirm what the alarm means by
clicking Event Log on any page.
• Check the ambient temperature and lower it, if needed.
Ambient temperature should be less than 40°C.
• Check that the X24 Subsystem has good airflow
clearance.
SM
CPU temperature
• Warning: 0°C to 4°C and
91°C to 100°C
• Shutdown: <0°C and >100°C
• Same as above.