Seagate ST3500620SS ユーザーズマニュアル
Barracuda ES.2 SAS Product Manual, Rev. E
7
3.0
General description
Barracuda ES.2 drives combine Tunneling Magnetoresistive (TMR) heads and a Serial Attached SCSI (SAS)
interface to provide high performance, high capacity data storage for a variety of systems including engineer-
ing workstations, network servers, mainframes, and supercomputers. The Serial Attached SCSI interface is
designed to meet next-generation computing demands for performance, scalability, flexibility and high-density
storage requirements.
interface to provide high performance, high capacity data storage for a variety of systems including engineer-
ing workstations, network servers, mainframes, and supercomputers. The Serial Attached SCSI interface is
designed to meet next-generation computing demands for performance, scalability, flexibility and high-density
storage requirements.
Barracuda ES.2 drives are random access storage devices designed to support the Serial Attached SCSI Pro-
tocol as described in the ANSI specifications, this document, and the SAS Interface Manual (part number
100293071) which describes the general interface characteristics of this drive. Barracuda ES.2 drives are clas-
sified as intelligent peripherals and provide level 2 conformance (highest level) with the ANSI SCSI-1 standard.
The SAS connectors, cables and electrical interface are compatible with Serial ATA (SATA), giving future users
the choice of populating their systems with either SAS or SATA hard disk drives. This allows you to continue to
leverage your existing investment in SCSI while gaining a 3Gb/s serial data transfer rate.
tocol as described in the ANSI specifications, this document, and the SAS Interface Manual (part number
100293071) which describes the general interface characteristics of this drive. Barracuda ES.2 drives are clas-
sified as intelligent peripherals and provide level 2 conformance (highest level) with the ANSI SCSI-1 standard.
The SAS connectors, cables and electrical interface are compatible with Serial ATA (SATA), giving future users
the choice of populating their systems with either SAS or SATA hard disk drives. This allows you to continue to
leverage your existing investment in SCSI while gaining a 3Gb/s serial data transfer rate.
The head and disk assembly (HDA) is sealed at the factory. Air recirculates within the HDA through a non-
replaceable filter to maintain a contamination-free HDA environment.
replaceable filter to maintain a contamination-free HDA environment.
Note.
Never disassemble the HDA and do not attempt to service items in the sealed enclosure (heads,
media, actuator, etc.) as this requires special facilities. The drive does not contain user-replaceable
parts. Opening the HDA for any reason voids your warranty.
media, actuator, etc.) as this requires special facilities. The drive does not contain user-replaceable
parts. Opening the HDA for any reason voids your warranty.
An automatic shipping lock prevents potential damage to the heads and disks that results from movement dur-
ing shipping and handling. The shipping lock disengages and the head load process begins when power is
applied to the drive.
ing shipping and handling. The shipping lock disengages and the head load process begins when power is
applied to the drive.
The drives also use a high-performance actuator assembly with a low-inertia, balanced, patented, straight arm
design that provides excellent performance with minimal power dissipation.
design that provides excellent performance with minimal power dissipation.
Figure 1.
Barracuda ES.2 drive illustration