Configuration On Disk; Array Performance Features; Fault Tolerance Capabilities; Table 31. Raid Controller Srombu42E Array Performance - Intel SE7520AF2 Technical Product Specification

Intel® Server Board SE7520AF2 TPS
Feature
Hardware Exclusive OR (XOR)
Direct I/O
Architecture
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

Drive Data Transfer Rate
Maximum Scatter/Gathers
Maximum Size of I/O Requests
Maximum Queue Tags per Drive
Stripe Sizes
Maximum Number of Concurrent Commands
Support for Multiple Initiators
4.2.3

Fault Tolerance Capabilities

SROMBU42E Performance
Support for SMART 1
Optional Battery Backup for Cache memory
Drive Failure Detection
Drive Rebuild Using Hot Spares
Parity Generation and Checking
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.
Revision 1.2
Yes
Yes
Fusion-MPT*
SROMBU42E Features

Table 32. RAID Controller SROMBU42E Fault Tolerance

Intel order number C77866-003
Integrated Intel® RAID Controller SROMBU42E
Description
320 Mbytes/s
26 elements
6.4 Mbytes in 64 Kbyte stripes
As many as the drive can accept
2, 4, 8, 16, 32, 64, or 128 Kbyte
255
Yes
Yes
Yes, via the Intel Portable Cache Module.
Up to 72 hours data retention
Automatic
Automatic
Yes
85