Seagate ST3146707FC 146GB Fibre Channel Hard Disk Drive

Seagate ST3146707FC 146GB 3.5in 2Gbps 10K RPM 40 pin Cheetah 10K.7 FC-AL Fibre/Fiber Channel HDD

Seagate ST3146707FC 146GB 3.5″ 2.0 Gbps 10000 RPM 40 pin Cheetah 10K.7 FC-AL Fibre/Fiber Channel Hard Disk Drive

Apt MPN: 9X2004-150

Cheetah 10K.7 FC drives combine giant magnetoresistive (GMR) heads, partial response/maximum likelihood (PRML) read channel electronics, embedded servo technology, and a Fibre Channel interface to provide high performance, high capacity data storage for a variety of systems including engineering workstations, network servers, mainframes, and supercomputers.

Cheetah 10K.7 FC drives support the Fibre Channel Arbitrated Loop (FC-AL) and SCSI Fibre Channel Protocol as described in the ANSI specifications, this document, and the Fibre Channel Interface Manual (part number 77767496) which describes the general interface characteristics of this drive. Cheetah 10K.7 FC drives are classified as intelligent peripherals and provide level 2 conformance (highest level) with the ANSI SCSI standard.

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 contains no parts replaceable by the user and opening the HDA for any reason voids your warranty.

Cheetah 10K.7 FC drives use a dedicated landing zone at the innermost radius of the media to eliminate the possibility of destroying or degrading data by landing in the data zone. The drive automatically goes to the landing zone when power is removed.

An automatic shipping lock prevents potential damage to the heads and discs that results from movement during shipping and handling. The shipping lock automatically disengages when power is applied to the drive and the head load process begins.

A high-performance actuator assembly with a low-inertia, balanced, patented, straight arm design provides excellent performance with minimal power dissipation.

Standard features

Cheetah 10K.7 FC drives have the following standard features:

• Integrated dual port FC-AL controller
• Concurrent dual port transfers
• Support for FC arbitrated loop, private and public attachment
• Differential copper FC drivers and receivers
• Downloadable firmware using the FC-AL interface
• Supports SCSI enclosure services via interface connector
• 128-deep task set (queue)
• Supports up to 32 initiators
• Drive selection ID and configuration options are set on the FC-AL back panel or through interface commands. Jumpers are not used on the drive.
• Fibre Channel worldwide name uniquely identifies the drive and each port
• User-selectable logical block size (any multiple of four bytes, 512 to 528 bytes per logical block)
• Selectable frame sizes from 256 to 2,112 bytes
• Industry standard 3.5-inch low profile form factor dimensions
• Programmable logical block reallocation scheme
• Flawed logical block reallocation at format time
• Programmable auto write and read reallocation
• Reed-Solomon error correction code
• Sealed head and disc assembly (HDA)
• No preventive maintenance or adjustments required
• Dedicated head landing zone
• Automatic shipping lock
• Embedded Grey Code track address and servo wedge address to eliminate seek errors
• Self-diagnostics performed at power on
• 1:1 interleave
• Zone bit recording (ZBR)
• Vertical, horizontal, or top down mounting
• Dynamic spindle brake
• 8,192 Kbyte data buffer. See Section 4.5.
• Drive Self Test (DST)
• BackGround Media Scan (BGMS)
• Data Integrity Check
• Power Save
• Embedded servo design
• Reallocation of defects on command (Post Format)
• Fibre Channel interface transports SCSI protocol

Media description

The media used on the drive has an aluminum substrate coated with a thin film magnetic material, overcoated with a proprietary protective layer for improved durability and environmental protection.

Performance

• Programmable multi-segmentable cache buffer
• 200 Mbytes/sec maximum instantaneous data transfers per port
• 10K RPM spindle; average latency = 3.0 msec
• Command queuing of up to 128 commands
• Background processing of queue
• Supports start and stop commands

Reliability

• Annualized Failure Rate (AFR) or 0.62%
• LSI circuitry
• Balanced low mass rotary voice coil actuator
• Self-Monitoring Analysis and Reporting Technology (S.M.A.R.T.)
• Dithering