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5 Intel® RAID Controller SRCSAS18E User’s Guide
• Two internal connectors
• Support for RAID levels 0, 1, 5, 10, and 50
• Advanced array configuration and management utilities
• 32 Kbyte NVRAM for storing RAID system configuration information; the firmware
is stored in flash ROM for easy upgrades.
SAS Features
The following list describes the SAS features:
• Provides eight fully independent phys
• Each phy supports 3.0 Gbit/s and 1.5 Gbit/s SAS data transfers
• Supports SSP to enable communication with other SAS devices
• Supports SMP to communicate topology management information
• Provides a serial, point-to-point, enterprise-level storage interface
• Simplifies cabling between devices
• Provides a scalable interface that supports up to 128 devices through multiple
expanders
• Supports wide ports consisting of 2, 3, or 4 phys within a single quad port
• Supports narrow ports consisting of a single phy
• Transfers data using SCSI information units
SATA Features
The following list describes the SATA features:
• Supports SATA data transfers of 3.0 Gbits/s and 1.5 Gbits/s
• Supports STP data transfers of 3.0 Gbits/s and 1.5 Gbits/s
• Provides a serial, point-to-point storage interface
• Simplifies cabling between devices
• Eliminates the master-slave construction used in parallel ATA
• Allows addressing of multiple SATA targets through an expander if using SATA 2.0-
compliant hard disk drives
• Allows multiple initiators to address a single target (in a fail-over configuration)
through an expander
PCI Performance
This RAID controller uses an Intel
®
IOP333 500 MHz I/O processor.