Intel RS3DC040 Guia do Utilizador descarregar pdf (Página 19)

12Gb/s Intel® RAID Controllers User Guide 9

• They permit multiple initiators to address a single target (in a fail-over

configuration) through an expander.

PCI Express Performance

The following list describes the PCIe performance features of the RAID controllers:

• They provide a PCIe interface that does the following:

— Supports a dedicated PCIe bus.

— Supports x8 lane configuration.

— Supports transfer rates of up to 8GT/s per lane.

— Complies with the PCI Express specification, Revision 3.0, and the Serial ATA

specification, version 3.0.

• They provide unequaled performance through the Fusion-MPT architecture.

• They provide high throughput and low CPU utilization to offload the host

processor.

Usability Features

The following list describes the usability features of the RAID controllers:

• They simplify cabling with point-to-point, serial architecture.

• They support smaller, thinner cables that do not restrict airflow.

• They provide drive spin-up sequencing control.

• They provide one LED signal for each PHY to indicate link activity (this is a fault

LED only for controllers with internal port connectors).

• They provide an I

C interface for enclosure management.

• They support the internal SAS Sideband signal SFF-8485 (SGPIO) interface.

Flexibility Features

These features increase the flexibility of the RAID controllers:

• They support a Flash ROM interface, a nonvolatile static RAM (NVSRAM)

interface, and a pipelined synchronous burst SRAM (PSBRAM) interface.

• They offer a flexible programming interface to tune I/O performance.

• They permit mixed connections to SAS targets or SATA III targets.

• They leverage compatible connectors for SAS connections and SATA III

connections.

• They permit grouping of up to four PHYs in a single quad port to form a wide port.

• They permit programming of the World Wide Name.

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Intel RS3DC040 Guia do Utilizador Página 19