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Intel® Server Board SE7520AF2 TPS
Integrated Intel® RAID Controller SROMBU42E
Revision 1.2
85
Intel order number C77866-003
Feature
Description
Hardware Exclusive OR (XOR)
Yes
Direct I/O
Yes
Architecture
Fusion-MPT*
4.2.1
Configuration on Disk
Configuration on Disk saves configuration information both in NVRAM on the Intel® RAID
Controller SROMBU42E and on the disk drives attached to the controller. If the Intel® Server
Board SE7520AF2 is replaced, the new board detects the RAID configuration from the
configuration information on the drives. This maintains the integrity of the data on each drive,
even if the drives have changed their target ID.
Note:
Configuration on Disk does not work if you change both the SROMBU42E controller and
the SCSI connectors to different connectors on the new SROMBU42E controller. It works only if
you make one change at a time.
4.2.2
Array Performance Features
Table 31. RAID Controller SROMBU42E Array Performance
SROMBU42E Features
Drive Data Transfer Rate
320 Mbytes/s
Maximum Scatter/Gathers
26 elements
Maximum Size of I/O Requests
6.4 Mbytes in 64 Kbyte stripes
Maximum Queue Tags per Drive
As many as the drive can accept
Stripe Sizes
2, 4, 8, 16, 32, 64, or 128 Kbyte
Maximum Number of Concurrent Commands
255
Support for Multiple Initiators
Yes
4.2.3
Fault Tolerance Capabilities
Table 32. RAID Controller SROMBU42E Fault Tolerance
SROMBU42E Performance
Support for SMART 1
Yes
Optional Battery Backup for Cache memory
Yes, via the Intel Portable Cache Module.
Up to 72 hours data retention
Drive Failure Detection
Automatic
Drive Rebuild Using Hot Spares
Automatic
Parity Generation and Checking
Yes
Note:
1.
The Self Monitoring Analysis and Reporting Technology (SMART) detects up to 70 percent of all
predictable disk drive failures. SMART also monitors the internal performance of all motors, heads, and
drive electronics.