Hardware User Guide

41 12Gb/s Intel® RAID Controllers User Guide
Fault Tolerance
The following table lists the fault tolerance features for the 12Gb/s Intel
®
RAID
Controllers.
Table 13. Fault Tolerance Features
A. The Self Monitoring Analysis and Reporting Technology (SMART) detects up to 70 percent of
all predictable drive failures. In addition, SMART monitors the internal performance of all
motors, heads, and drive electronics.
Electrical Characteristics
This subsection provides the power supply requirements for the 12Gb/s Intel
®
RAID
Controllers.
Power Supply Requirements for the Intel
®
RAID Controller RS3WC080
All power is supplied to the Intel
®
RAID Controller RS3WC080 through the PCIe 3.3V
rails and the 12V rail. On-board switching regulator circuitry operating from the 12V rail
provides the necessary voltages.
The supply voltages are 12V ± 8 percent (from PCI edge connector only) and 3.3V ± 9
percent (from PCI edge connector only). The following table lists the power for the RAID
controllers at peak and normal status.
Maximum size of I/O requests 6.4 MB in 64-KB strips
Maximum queue tags per drive As many as the drive can accept
Strip sizes 8 KB, 16 KB, 32 KB, 64 KB, 128 KB, 256 KB, 512 KB, or 1
MB
Maximum number of concurrent
commands
255
Specification
RS3WC080, RMSHC080, RS3DC040, RS3DC080,
RS3MC044, RS3SC008, and RMS3CC080
Specification
RS3WC080, RMSHC080, RS3DC040, RS3DC080,
RS3MC044, RS3SC008, and RMS3CC080
Support for SMART
A
Yes
Drive failure detection Automatic
Drive rebuild using hot spares Automatic
Parity generation and checking Yes