Fault Tolerance Features - LSI MegaRAID SAS 9240-4i User Manual

3.3.3 Fault Tolerance
3.3.4 Electrical Characteristics
3.3.4.1 Power Supply Requirements for SAS 9240 RAID Controllers
Table 3.8 Array Performance Features (Cont.)
Specification
Maximum queue tags per drive
Stripe sizes
Maximum number of concurrent
commands
Table 3.9 lists the fault tolerance features for the MegaRAID 6Gb/s SAS
RAID controllers.
Table 3.9

Fault Tolerance Features

Specification
1
Support for SMART
Drive failure detection
Drive rebuild using hot spares
Parity generation and checking
1. 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.
This subsection provides the power supply requirements for the
MegaRAID 6Gb/s SAS RAID controllers.
All power is supplied to the SAS 9240 RAID controllers through the PCI
Express 3.3V rails and the 12V rail. Onboard switching regulator circuitry
operating from the 3.3V rails and the 12V rail provide the necessary
Technical Specifications
Copyright © 2009 by LSI Corporation. All rights reserved.
MegaRAID SAS 9240, SAS 9260, SAS
9261, and SAS 9280 RAID Controllers
As many as the drive can accept
8 Kbytes, 16 Kbytes, 32 Kbytes, 64 Kbytes,
128 Kbytes, 256 Kbytes, 512 Kbytes, or
1 Mbyte
255
MegaRAID SAS 9240, SAS 9260, SAS 9261,
and SAS 9280 RAID Controllers
Yes
Automatic
Automatic
Yes
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