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Description:
| Barracuda 50 drives combine magnetoresistive (MR) heads, partial response/maximum likelihood (PRML) read channel electronics, embedded servo technology, and a SCSI-3 (Fast-20 and Fast-40) interface to provide high performance, high capacity data storage for a variety of systems including engineering workstations, network servers, mainframes, and supercomputers.
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Features:
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Integrated SCSI controller
Multimode SCSI single-ended or low voltage differential drivers and receivers
16 bit I/O data bus
Asynchronous and synchronous data transfer protocol
Firmware downloadable via SCSI interface
Selectable sector sizes from 512 to 2,048 bytes/sector in multiples of 4 bytes/sector
Programmable drive capacity
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 correction capability up to 185 bits
Sealed head and disc assembly
No preventative maintenance or adjustment required
Dedicated laser textured head landing zone
Embedded servo data rather than a separate servo data surface
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
1 Mbyte, or optional 4 Mbyte data buffer
Hot plug compatibility (section 9.6.4.2 lists proper host connector needed) for “LC” model drives
SCAM (SCSI Configured AutoMagically) plug-n-play level 2 compliant, factory set to level 1 (not user selectable)
Low audible noise for office environment
Low power consumption
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Specifications:
| UNFORMATTED CAPACITY (GB) |
63.1 |
| FORMATTED CAPACITY (GB) |
50.01 |
| AVERAGE SECTORS PER TRACK |
369 rounded down |
| ACTUATOR TYPE |
ROTARY VOICE COIL |
| TRACKS |
264,528 |
| CYLINDERS |
12,024 user |
| HEADS (PHYSICAL) |
22 |
| DISCS (3.5 in) |
11 |
| MEDIA TYPE |
THIN FILM/MR |
| RECORDING METHOD |
PRML 8/9 EPR4 |
| INTERNAL TRANSFER RATE (mbits/sec) |
153 to 264 |
| INTERNAL FORMATTED TRANSFER RATE (MB/sec) |
19.1 to 33.0 |
| EXTERNAL TRANSFER RATE (mbyte/sec) |
40 Sync |
| Low Voltage Differential(LVD) |
80 Sync |
| SPINDLE SPEED (RPM) |
7,184 |
| AVERAGE LATENCY (mSEC) |
4.17 |
| BUFFER (/optional) |
1MB/4MB
Read Look-Ahead, Adaptive, Multi-Segmented Cache |
| INTERFACE |
Ultra-SCSI Wide
Low Voltage Differential - Ultra2-SCSI Wide
ASA II, SCAM level 2 (1 default) |
| BYTES PER TRACK |
189.28 KB avg |
| SECTORS PER DRIVE |
97,693,755 |
| TPI (TRACKS PER INCH) |
12,905 |
| BPI (KBITS PER INCH) |
252 |
AVERAGE ACCESS (ms read/write)
7.6/8.4
Drive level with controller overhead |
| SINGLE TRACK SEEK (ms read/write) |
0.9/1.2 |
| MAX FULL SEEK (ms read/write) |
16/17 |
| POWER REQUIREMENTS: |
+12V START-UP (amps) - 2.6
+12V TYPICAL (amps) - 0.68 idle
+5V START-UP (amps) - 0.77
+5V TYPICAL (amps) - 0.69 idle |
| Physical: |
Height (inches/mm): 1.62/41.1
Width (inches/mm): 4.00/101.6
Depth (inches/mm): 5.75/146.1
Weight (lbs/kg): 2.2/0.99 |
Product Content:
- Seagate Barracuda 50 - ST150176LC 50.1GB Ultra-SCSI Wide 80-Pin 7200RPM Hard Drive (ST-150176LC)
- - SOFTWARE NOT INCLUDED -
Before you purchase this item, please ensure that you have verified compatibility with system by visiting the manufacturer's web site.
We assume no responsibility and will not accept full refunds for items purchased that are not compatible with your system configuration.
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Conditions:
Warranty:
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