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3.0
General description
Enterprise Capacity 3.5 HDD v4 drives provide high performance, high capacity data storage for a variety of systems including engineering
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.
Enterprise Capacity 3.5 HDD v4 drives are random access storage devices designed to support the Serial Attached SCSI Protocol 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. Enterprise Capacity 3.5 HDD v4 drives are classified 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 users to continue to leverage existing investment in SCSI while
gaining a 12Gb/s serial data transfer rate.
The Self-Encrypting Drive models indicated on the cover of this product manual have provisions for "Security of Data at Rest" based on the
standards defined by the Trusted Computing Group
(see www.trustedcomputinggroup.org).
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.
Never disassemble the HDA and do not attempt to service items in the sealed enclosure (heads,
Note
media, actuator, etc.) as this requires special facilities. The drive does not contain user-
replaceable parts. Opening the HDA for any reason voids the product warranty.
Enterprise Capacity 3.5 HDD v4 drives use a dedicated load/unload zone at the outermost radius of the media to eliminate the possibility of
destroying or degrading data by landing in the data zone. The heads automatically go to the ramp load/unload when power is removed from the
drive.
An automatic shipping lock prevents potential damage to the heads and discs that results from movement during shipping and handling. The
shipping lock disengages and the head load process begins when power is applied to the drive.
Enterprise Capacity 3.5 HDD v4 drives decode track 0 location data from the servo data embedded on each surface to eliminate mechanical
transducer adjustments and related reliability concerns.
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.
Seagate recommends validating the configuration with the selected HBA/RAID controller
Note
manufacturer to ensure use of full capacity is supported.
Seagate Enterprise Capacity 3.5 HDD v4 SAS Product Manual, Rev. G
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