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Introduction:QuantumAtlas™10KIII18GBSCSIHardDiskDriveUser’s Guide
Overview •General Features •Performance •Reliability •Versatility •Drive Diagram
Overview
Quantum Atlas 10K III SCSI hard disk drives are part of a family of high performance 1-inch high hard disk drives manufactured to meet the highest
product quality standards. The innovative design of the Quantum Atlas 10K III enables Quantum to produce a family of low-cost, high reliability
SCSI hard disk drives. These hard disk drives use non-removable, 3.5-inch hard disks and are available with the following SCSI configurations:
lUltra160, Ultra2, Ultra SCSI 68-pin Wide (16-bit).
lUltra160, Ultra2, Ultra SCSI 80-pin SCA-2 (16-bit).
The Quantum Atlas 10K III SCSI hard disk drives feature an embedded SCSI drive controller that automates significant SCSI commands to
optimize system performance. The drive also manages media defects and error recovery internally, making these operations fully transparent to
the user.
General Features
The Quantum Atlas 10K III 18GB SCSI hard disk drives include the following key features:
lFormatted storage capacity of 18.2GB.
lLow profile, 1-inch height.
lIndustry standard 3.5-inch form factor.
lEmbedded SCSI controller.
lSCSI-2 and SCSI-3 support.
lSCSI bus active negation drivers.
lSCSI bus fairness.
lAutomatic Power Management System with power saving sub-states.
lEmbedded servo system for exceptional head positioning accuracy and long life.
lQuiet Drive Technology (QDT) for lower acoustic noise while seeking.
Performance
lAverage seek time of less than 4.5ms for reads.
l10,000 RPM rotational speed.
lAverage rotational latency of 3.0ms.
l8MB SDRAM buffer. Look-ahead DisCache feature with continuous prefetch and WriteCache write-buffering capabilities.
lRead-on-arrival firmware.
lTagged command queuing with reordering (ORCA).
lECC on-the-fly data correction.
lHighly automated SCSI protocol (including AutoRead and AutoWrite).
l1:1 interleave on read and write operations.
lHigh performance Ultra160 SCSI interface.
lData transfer rates of up to 6.0MB/s asynchronous, 40MB/s Ultra SCSI, 80MB/s Ultra2 SCSI, and 160MB/s Ultra160 SCSI.
Reliability
l1,100,000 hours Mean Time Between Failure (MTBF).
l352-bit interleaved Reed-Solomon Error Correction Code (ECC), with cross checking correction of up to three separate bursts of 32 bits
each totalling up to 96 bits in length.
lSMART 2 (Self-Monitoring, Analysis and Reporting Technology).
lSelf-Diagnostic firmware.
lPatented Airlock automatic shipping lock and dedicated landing zone.
lTransparent media defect mapping.
lReassignment of defective sectors without reformatting.
lShock sensor prevents the drive from writing data to disk when the drive is subjected to excessive external shock.
