Seagate CHEETAH 15K.5 SCSI ST3146855LC - Manual (Page 13)

Cheetah 15K.5 SCSI Product Manual, Rev. J 7
An automatic shipping lock prevents potential damage to the heads and discs that results from movement dur-
ing 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.
4.1 Standard features
The Cheetah 15K.5 SCSI family has the following standard features:
• Perpendicular recording technology.
• Integrated Ultra320 SCSI interface.
• Multimode SCSI drivers and receivers—single-ended (SE) and low voltage differential (LVD)
• 16 bit I/O data bus
• Asynchronous and synchronous data transfer protocol
• Firmware downloadable via SCSI interface
• Selectable even byte sector sizes from 512 to 528 bytes/sector
• Programmable sector reallocation scheme
• Flawed sector reallocation at format time
• Programmable auto write and read reallocation
• Reallocation of defects on command (post format)
• ECC burst correction length of up to 400.
• Sealed head and disc assembly
• No preventative maintenance or adjustment required
• Dedicated head landing zone
• Embedded servo design
• Self diagnostics performed when power is applied to the drive
• Zoned bit recording (ZBR)
• Vertical, horizontal, or top down mounting
• Dynamic spindle brake
• 16,384 kbytes data buffer
• Hot plug compatibility (Section 10.6.4.2 lists proper host connector needed) for LC model drives
• Drive Self Test (DST)
• Supports SCSI bus fairness
4.2 Media characteristics
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.