Seagate ST318418N, ST318438LW Standard features, Media characteristics, Performance, Reliability

6 Barracuda 36ES2 Product Manual, Rev. B

3.1Standard features

The Barracuda 36ES2 family has the following standard features:

•Integrated Ultra160 SCSI controller

•Multimode SCSI drivers and receivers—single-ended (SE) and low voltage differential (LVD)

•16 bit I/O data bus on LW models. 8 bit I/O data bus on the N model.

•Asynchronous and synchronous data transfer protocol

•Firmware downloadable via SCSI interface

•Selectable even-byte sector sizes from 512 to 4,096 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)

•Enhanced ECC maximum burst correction length of 240 bits with a guaranteed burst correction length of 233 bits.

•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

•1:1 Interleave

•Zoned bit recording (ZBR)

•Vertical, horizontal, or top down mounting

•Dynamic spindle brake

•2,048 kbyte data buffer

•Drive Self Test (DST)

3.2Media characteristics

The media used on the drive has a diameter of approximately 3.74 inches (95 mm). The aluminum substrate is coated with a thin film magnetic material, overcoated with a proprietary protective layer for improved durability and environmental protection.

3.3Performance

•Supports industry standard Ultra160 SCSI interface

•Programmable multi-segmentable cache buffer (see Section 3.1)

•7,200 RPM spindle. Average latency = 4.17 ms

•Command queuing of up to 64 commands

•Background processing of queue

•Supports start and stop commands (spindle stops spinning)

3.4Reliability

•800,000 hour MTBF

•LSI circuitry

•Balanced low mass rotary voice coil actuator

•Incorporates industry-standard Self-Monitoring, Analysis and Reporting Technology (S.M.A.R.T.)

•3-year warranty