Adaptec 48300 User Manual

Page 12

Introduction

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Serial Attached SCSI (SAS) on the Adaptec

HostRAID Controller

The Adaptec SAS 48300 is a low-profile PCI-X to 8-Phy SAS 1.0
HostRAID controller that enables you to connect SAS or SATA I and
SATA II devices, such as hard disk drives, to an Intel-based computer
with 64-bit PCI/PCI-X expansion slots.

SAS is the next-generation enterprise-class storage interface technology
replacing the parallel SCSI interface. It uses a point-to-point connection
for devices including initiators, targets, and expanders, and a routable
protocol to connect up to 128 devices. It offers much faster
communication and easier configuration. In addition, SAS provides
device compatibility to Serial ATA (SATA) and uses similar cabling.

The Adaptec SAS HostRAID controller has an internal 4X SFF-8484
SAS 1.1 6-meter connector and an external 4X SFF-8470 SAS 1.0
8-meter connector with a maximum throughput of 3.0 Gb/sec (300
MB/sec). SAS allows for a cable with a compact design and length of up
to 8 meters for optimal connectivity and airflow inside enclosures. For
more information about SAS, see

Introduction to SAS on page D80

External
Connector

Internal
Connector

PCI/PCI-X Connector

J1 (LED
Connector)