IBM Redbooks ServeRAID-MR10i, User Manual

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3-6 ServeRAID-MR10i SAS/SATA Controller Characteristics
3.3.3 Fault Tolerance
Table 3.5 shows the fault tolerance features of the ServeRAID-MR10i
controller.
3.3.4 Electrical Characteristics
All power is supplied to the ServeRAID-MR10i controller 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
voltages. The following states determine the typical current consumption
of the controller:
•
State 1: During a hard reset
•
State 2: During a disk stress test
•
State 3: While sitting idle at the DOS prompt
Stripe Sizes 8, 16, 32, 64, or 128 Kbytes
Maximum Number of Concurrent
Commands
255
Support for Multiple Initiators Yes
Table 3.4 Array Performance Features (Cont.)
Specification ServeRAID-MR10i Controller
Table 3.5 Fault Tolerance Features
Specification ServeRAID-MR10i Controller
Support for SMART
1
1. The Self Monitoring Analysis and Reporting Technology (SMART) detects
up to 70 percent of all predictable disk drive failures. In addition, SMART
monitors the internal performance of all motors, heads, and drive
electronics.
Yes
Optional Battery Backup for
Cache Memory
iBBU battery backup. 4.8V/880mAH battery
pack; up to 72 hours of data retention for
512 Mbytes
Drive Failure Detection Automatic
Drive Rebuild Using Hot Spares Automatic
Parity Generation and Checking Yes