Adaptec 7220ss User Guide

Some host OSs disable the write-back cache of the controller, 
resulting in degraded performance. You can stop this from 
happening by enabling the Cache Lock. (The default setting is 
Disabled.)

To enable the cache lock:

From the System Menu, select Configuration Menu and press 
Enter

.

The Configuration menu appears. 

Table 5-2  Alarm Thresholds

CPU temperature

Warning—0°C–5°C 
and 
65°C–70°C
Shutdown—0°C, 70°C,
<0°C, and >70°C

■

Check Adaptec Disk Array 
Administrator to confirm what the alarm 
means. See 

■

Check the ambient temperature and 
lower it, if needed. Ambient temperature 
should be less than 45°C.

Onboard temperature

Warning—0°C–5°C 
and 
45°C–50°C
Shutdown—0°C, 50°C,
<0°C, and >50°C

■

Same as above for the CPU temperature.

VCC voltage

Warning—5V -3.5% 
and +6.5%
Shutdown—5V -6.5% 
and +10%

■

Check Adaptec Disk Array 
Administrator to confirm what the alarm 
means. See 

■

If it is a warning alarm, let the controller 
continue to operate.

■

If it is a shutdown alarm, turn off the 
power to the controller and send it for 
service.

12V voltage

Warning—12V -8% 
and +8%
Shutdown—12V -10% 
and +10%

■

Same as above for the VCC voltage.