Manuals

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

Overview

These hard disk drives are 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

•  9.1, 18.2, or 36.4 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). Third Party XOR support for Force.
• 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 Ultra 160/m-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 system reports 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 for 9.1 and 18.2 GB disks; 5.5 ms second average random seek time (READ) and 8.5 ms average access-to-data time for 36.4 GB disk.
• 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 1 (compatible with SCSI-2 and SCSI� 1) 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

• 1,200,000 (9.1GB), 1,000,000 (18.2GB) and 800,000 (36.4GB)  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
• Adaptive cache segmentation
• Reassignment of defective sectors discovered in the field, without reformatting

 

Versatility

• Downloadable firmware

Drive Diagram

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