Appendix A
Specifications
Fault Tolerance Management
A-5
Remote Control and
Monitoring
Yes
Event Broadcast/Alert
Yes (via RAIDWatch sub-modules, the Configuration Client utility,
NPC, or Embedded, browser-based RAIDWatch)
Event Notification
Yes (via RAIDWatch sub-modules, Configuration Client, NPC, or
Embedded, browser-based RAIDWatch)
Hardware Connection
over Ethernet or RS-232C
Configuration on Disk
Configuration data stored on disks for logical drive assemblies to
exist after controller replacement; basic settings, e.g., channel mode
settings, are stored on NVRAM
Failure Indicator
Via audible alarm, LCD panel, RAIDWatch Manager session, or
terminal emulation
A.7. Fault Tolerance Management
Specification
Drive S.M.A.R.T. support
Yes, with user-configurable detect-only, clone-and-replace,
and perpetual-clone options.
Battery Back-up Option
Yes
Sensors and Module Presence
detection through an I
2
C serial
bus.
Yes
Automatic Drive Failure
Detection
Yes
Automatic Rebuild on Spare
Drives
Yes
Regenerate Logical Drive Parity
Yes
Bad Block Reassignment
Yes
Automatic Rebuild upon Failed
Drive Replacement
Yes
Manual Clone of Suspected
Failed Drive
Yes
Concurrent Rebuild on Multiple
Drives in a RAID (0 + 1) or
RAID6 Logical Drive
Yes
Salvage the 2
nd
Temporarily
Failed Drive in a RAID 1, 3 5, or
6 Logical Drive
Yes
Salvage the 1
st
Temporarily
Failed Drive in a RAID 0 Logical
Drive
Yes
