Introduction: Quantum Atlas 10K 36GB SCSI Hard Disk Drive User's Guide
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Introduction: Quantum Atlas� 10K 36GB SCSI Hard
Disk Drive User's Guide
Overview � General
Features � Performance �
Reliability
�
Versatility �
Drive
Diagram
Overview
Atlas 10K hard disk drives provide unequaled quality
and performance. They are designed to improve the performance of high-end
workstations, file servers, and storage systems.
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
The Quantum Atlas 10K hard disk drives include the following
key features:
-
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).
-
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
-
5.5 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
-
800,000 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
Drive Diagram
Figure 1. Drive Diagram
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