Manuals

Introduction: Quantum Atlas� 10K 18GB SCSI Hard Disk Drive User's Guide

Overview

These hard disk drives use non-removable, 3 1/2-inch hard disks and are available with the SCSI interface. A Quantum Atlas 10K hard disk drive is compatible with systems that provide the SCSI interface.

The innovative design of the Atlas 10K hard disk drives enables Quantum to produce a family of high performance, high reliability drives.

General Features

• 18.2 GB formatted capacity (512 bytes/block).
• MR heads and banded recording for higher overall bit densities.
• Hardware XOR to automatically detect and correct errors and defects in the data stream for array applications (RAID).
• Self-Monitoring, Analysis, and Reporting Technology (S.M.A.R.T.) Revision 2 support.
• ORCA (Optimized Reordering Command Algorithm) and tagged command queuing for greater throughput.
• SCAM-2 (SCSI Configured AutoMatically) Auto ID configuration.
• Automatic Power Management System with power-saving sub-states.
• Embedded servo system for exceptional head positioning accuracy and long life.
• Advanced Ultra160-LVD, Ultra2-LVD and Ultra SE Multimode SCSI with 68-pin wide connector or 80-pin SCA-2 connector.

NOTE: The formatted capacity of your hard disk drive may seem smaller than what you ordered because the operating systemreports drive capacity assuming that 1 megabyte (MB) equals 1,048,576 (2^20) bytes while drive manufacturers consider 1 MB to equal 1,000,000 (10^6) bytes.

Performance

• 5.0 ms average random seek time (READ) and 8.5 ms average access-to-data time.
• 10,000 rpm rotational speed yielding 3.0 ms average latency.
• 2 MB track-oriented segmented cache buffer with prefetch.
• �Zero Latency� reads and writes reduce data access time.
• Full SCSI� 3 compliance (compatible with SCSI-2 and SCSI� 1). The drives are in compliance with the SCSI-3 draft proposed ANSI standards as they exist at the time of product release; SCSI-3 features may not be enabled on drives when shipped.

Reliability

• 1,000,000 hours mean time between failure (MTBF) in the field.
• Automatic retry on read errors.
• Superior data integrity: 352-bit Reed-Solomon quad-burst ECC provides fast on-the-fly correction for small errors and robust software-based correction for larger errors. EDC internal protection from SCSI bus to media.
• Self-Monitoring, Analysis, and Reporting Technology (S.M.A.R.T.) Revision 2 support.
• Reassignment of defective sectors discovered in the field, without reformatting.

Versatility

• Downloadable firmware

Drive Diagram

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