IBM Redbooks ServeRAID-MR10M, User Manual

Page: 48 / 88

3-6 ServeRAID-MR10M SAS/SATA Controller Characteristics
3.3.3 Fault Tolerance
Table 3.5 shows the fault tolerance features of the ServeRAID-MR10M
SAS/SATA Controller.
3.3.4 Power Supply Requirements for the ServeRAID-MR10M
Controller
All power is supplied to the ServeRAID-MR10M SAS/SATA 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
Stripe Sizes 8, 16, 32, 64, or 128 Kbyte
Maximum Number of Concurrent
Commands
255
Support for Multiple Initiators Yes
Table 3.4 Array Performance Features (Cont.)
Specification ServeRAID-MR10M SAS/SATA Controller
Table 3.5 Fault Tolerance Features
Specification ServeRAID-MR10M SAS/SATA Controller
Support for SMART
1
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.
Yes
Optional Battery Backup for
Cache Memory
iBBU battery backup. 3.7V/500mAH 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