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NOTE: The information in this document applies to PERC 3/QC, PERC 3/DC, PERC 3/DCL and PERC 3/SC.

PERC 3 Overview

The Dell™ PowerEdge™ Expandable RAID Controller 3 (PERC 3) PCI card is a high-performance, intelligent peripheral component interconnect (PCI)-to-SCSI host adapter with RAID control capabilities. PERC 3 provides system availability, high performance, and fault-tolerant disk subsystem management. PERC 3 is an ideal RAID solution for the internal storage of Dell’s workgroup, departmental, and enterprise systems. PERC 3 offers a cost-effective way to implement RAID in a server.

The PERC 3/QC low voltage differential (LVD) PCI RAID card provides four SCSI channels. The PERC 3/DC and PERC 3/DCL LVD PCI RAID card provides two SCSI channels. The PERC 3/SC LVD PCI RAID card provides one SCSI channel.

With LVD, you can use cables up to 25 meters long. Throughput on each SCSI channel can be as high as 160 MB/s. PERC 3 supports both an LVD SCSI bus and a single-ended SCSI bus.

PERC 3 64-bit LVD is a high-performance, intelligent PCI-to-SCSI host adapter with RAID control capabilities. PERC 3 64-bit LVD requires no special motherboard PCI expansion slot.

PERC 3 Features

The PERC 3 features include:

Wide Ultra3 LVD SCSI performance of up to 160 MB/s

PERC 3/QC and PERC 3/DC support 128 MB of synchronous dynamic random access memory (SDRAM.)

The PERC 3/DCL supports 64 MB of SDRAM.

The PERC 3/SC supports 32 MB of SDRAM.

64-bit PCI host interface (only on PERC 3/QC and PERC 3/DC)

The PERC 3/QC, PERC 3/DC and PERC 3/DCL have an on-board i960RN processor to improve controller performance and offload host Central Processing Unit (CPU.)

The PERC 3/SC has a on-board i960RM processor to improve controller performance and offload host CPU.

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Dell manual Perc 3 Overview, Perc 3 Features