Seagate Enterprise Performance 10K HDD v9 Product Manual, Rev. D (Draft 2)
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3.0
General description
Seagate® Enterprise Performance 10K HDD 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.
The Advanced Caching functionality (available on 512E/4Kn only) provides improved performance over standard HDDs in real-world
workloads. This improvement is due to the addition of a solid state component that caches “hot” data for reads as well as protects
write data via non-volatile cache (NVC).
Seagate Enterprise Performance 10K HDD 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. Seagate Enterprise Performance 10K HDD 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 integrators to continue to leverage existing investment in SCSI while gaining a 12Gb/s serial
data transfer rate.
Seagate Enterprise Performance 10K HDD 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 and during the deeper sleep modes.
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.
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 in any orientation.
3.1
Standard features
Enterprise Performance 10K HDD drives have the following standard features:
• 128 - deep task set (queue)
• 256MB / 128MB data buffer (see Section 4.5)
• 3.0 / 6.0 / 12.0 Gb Serial Attached SCSI (SAS) interface
• 8MB NVC-backed write cache 512E/4Kn only
• Dedicated head load/unload zone and automatic shipping lock
• Drive Self Test (DST)
• Dynamic spindle brake
• ECC maximum burst correction length of 520 bits for 512 byte blocks and 3000 bits for 4K byte blocks.
• Embedded servo design
• Firmware downloadable using the SAS interface
• Flawed logical block reallocation at format time
• Idle Read After Write (IRAW)
• Industry standard SFF 2.5-inch dimensions
• Integrated dual port SAS controller supporting the SCSI protocol
• Jumperless configuration
• Multi-Sensor Magnetic Recording (implements dual readers)
• No preventive maintenance or adjustments required
• Power Balance supported (see Section 6.2 on page 26)
• Power Choice
• Programmable auto write and read reallocation
• Programmable logical block reallocation scheme
• RAID Rebuild ™
• Reallocation of defects on command (Post Format)
• SAS Power Disable
• Self diagnostics performed when power is applied to the drive
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 the warranty.
