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Raidtec FS3102 Hardware Installation Guide Version 1.0 24
Appendix A - Alerts
Failure Events
The following table summarizes the operation of the system in the presence of various failures.
Email refers to an email notification sent by the controller over the Ethernet interface to an assigned email address,
SNMP refers to an SNMP trap sent by the controller over the Ethernet interface to a designated SNMP recipient
and Event log refers to an event logged in the Alert Log in the Raidtec Manager Management Software.
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
available.
N/A Event log
Disk
(RAID Level 1,
5 or 10)
Drive
removed or
drive failure
No effect.
RAID volume
degraded.
Loss of high
availability. System
will become
unavailable on
second failure.
Performance may
drop
Event log, Email
and SNMP
Disk
(RAID Level 0)
Drive
removed or
drive failure
RAID is
inaccessible
RAID unavailable N/A Event log, Email
and SNMP
Disk
(RAID Level 1,
5 or 10)
Advanced
drive failure
notice
No effect
No effect Performance will
drop if spare is
available to rebuild
the failing drive to
Event log, Email
and SNMP
Disk
(RAID Level 0)
Advanced
drive failure
notice
No effect No effect None Event log, Email
and SNMP
Disk
(RAID Level 1,
5 or 10)
Medium
Error
No effect Stripe will be rebuilt
on alternate sectors.
Performance may
drop
Disk statistics
updated in
controller
If threshold met,
Event log, Email
and SNMP