Seagate 15K.3 ST373453FC Model Product Manual PDF - Page 16
Cheetah 15K.3 FC Product Manual, Rev. D, Standard features, Media description, Performance - cheetah firmware
UPC - 000004165019
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6 Cheetah 15K.3 FC Product Manual, Rev. D 3.1 Standard features Cheetah 15K.3 FC drives have the following standard features: • 2-Gbit Fibre Channel interface. For 2 gigabit operation, the block size must be divisable by 8. • 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 backpanel or through interface com- mands. Jumpers are not used on the drive. • Supports SCSI Enclosure Services through the interface connector • Fibre Channel worldwide name uniquely identifies the drive and each port • User-selectable logical block size (512 to 528 bytes per logical block). For 2 gigabit operation, the block size must be divisable by 8. • 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 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). • Embedded servo design • Reallocation of defects on command (Post Format) • Fibre Channel interface transports SCSI protocol 3.2 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. 3.3 Performance • Programmable multi-segmentable cache buffer • 200 Mbytes/sec maximum instantaneous data transfers per port. • 15k RPM spindle; average latency = 2.0 msec • Command queuing of up to 128 commands • Background processing of queue • Supports start and stop commands • Adaptive seek velocity; improved seek performance