User manual

FIBRE-to-SAS/SATA RAID SUBSYSTEM
140
User Manual
Chapter 10 Troubleshooting
10.1 Alerts
The following table summarizes the operation of the system in the presence of
various failures:
Failure
Class
Failure
Type
Effect on
Data
Effect on
Availability
Effect on
Performance
User
Notification
Power
(BBU Not
present)
Total Loss
Data may be
lost if write
cache is
enabled
System
unavailable
N/A Event log
Power
(BBU Not
present)
Transient
Loss
Data may be
lost if write
cache is
enabled
System
unavailable
during power
loss.
Controller
takes 7
seconds to
reboot and 60
seconds for
the system to
become
available.
N/A Event log
Power
(BBU
Present)
Total Loss
No effect
provided
outage is
shorter than
BBU hold
time
System
unavailable
N/A Event log
Power
(BBU
Present)
Transient
Loss
No effect
System
unavailable
during power
loss.
Controller
takes 7
seconds to
reboot and 60
seconds for
the system to
become
N/A Event log