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SEAGATE BARRACUDA 50

This drive has to be, although its been around for a while, one of the finest most reliable to be found in the world.  The Barracuda 50, will be an integral part of our upcoming Dream System Series and will be installed in our Dream Machine Server.  We will be using Microsoft's Windows 2000 Advanced Server Software as we are now in our Netfinity 325, but we are confident the new server will be a wonderful addition to the Netfinity.  When connected to and running with the Adaptec 2940 U2W controller.. this puppy screams. Stay Tuned... there is a great deal more in store.

  Barracuda Product Shot
 
Barracuda

ST150176LC

Capacity: 50.1 GB
Speed: 7200 rpm
Seek time: 7.4 ms avg
Interface: Ultra2 SCSI
Seafax: N/A
 

Seagate's Barracuda family of disc drives consists capacities from 9.1 to 50.1 Gbytes. Barracuda drives feature a 7,200-RPM spindle speed and an internal transfer rate of up to 29.6 Mbyte per second, making them the ideal choice for high-performance workstations, disc arrays, digital audio/video and network file-server applications.
Features Benefits
Ultra2 SCSI interface Differential data integrity; Up to 80-Mbyte/sec transfer rate; Cables 15 devices, up to 12 meters.
SAMS Seagate's Advanced Multidrive System optimizes performance in server and RAID applications
SeaShell Packaging that protects the drive from external shock
SCAM Plug and Play Automatic SCSI ID configuration
G-Force Protection Drive design enhancements that protect the device's data from external shock

Distinctions
  • Mature fifth-generation 7,200-RPM mechanism with proven reliability
  • 1,000,000 hour MTBF
  • Best performance in its class
Technical Specifications   Barracuda
  Description
Model number ST150176LC
Model Name Barracuda 50
Form Factor(width) 3.5-inch
Form Factor(height) half-height
  Physical Specifications
Height 41.1 mm
Width 101.6 mm
Length 146 mm
Weight 0.99 kg
  Capacity/Interface
Formatted Capacity 50.1 Gbytes, formatted
Interface Type 80-pin
  Performance
  Transfer Rates  
Internal Transfer Rate (min) 153 Mbits/sec
Internal Transfer Rate (max) 264 Mbits/sec
Formatted Int Transfer Rate (min) 15 Mbits/sec
Formatted Int Transfer Rate (max) 26 Mbits/sec
External (I/O) Transfer Rate (max) 80 MBytes/sec
Avg Formatted Transfer Rate 22.5 MBytes/sec
  Seek Times  
Average Seek Time, Read 7.4 msec typical
Average Seek Time, Write 8.2 msec typical
Track-to-Track Seek, Read 0.9 msec typical
Track-to-Track Seek, Write 1.2 msec typical
Full Disc Seek, Read 15.8 msec typical
Full Disc Seek, Write 16.8 msec typical
Average Latency 4.17 msec
  Other  
Default Buffer (cache) Size 1,024 Kbytes
Spindle Speed 7,200 RPM
Spinup Time 30 sec
Power-on to Ready Time 30 sec
  Configuration
Number of Discs (physical) 11
Number of Heads (physical) 22
Total Cylinders 12,024
Total Tracks 264,528
Bytes Per Sector 512
Track Density (TPI) 12,905 tracks/inch
Recording Density (BPI, max) 258,048 bits/inch
Bytes/Track (avg) 189,280
  Recording Components  
Recording Method 16/17 PR4
  Electrical Requirements
  Current  
Typical Current (12VDC +/- 5%) 1.2 amps
Startup Current (12VDC +/- 5%) 2.6 amps
Typical Current (5VDC +/- 5%) 0.8 amps
Startup Current (5VDC +/- 5%) 0.8 amps
  Power  
Idle Power (typ) 11.9 watts
  Environmental Specifications
  Shock and Vibration  
Max Operating Shock (11-msec) 5 Gs
Max Nonoperating Shock (2-msec) 150 Gs
Operating Vibration (max) 0.5 Gs
Nonoperating Vibration (max) 2 Gs
  Temperature and Humidity  
Operating Temperature (max) 50 deg C
Operating Temperature (min) 5 deg C
Nonoperating Temperature (max) 70 deg C
Nonoperating Temperature (min) -40 deg C
Operating Temperature Change (max) 20 deg C/hr
Nonoperating Temperature Change (max) 25 deg C/hr
Operating Humidity (max) 95 percent
Nonoperating Humidity (max) 95 percent
Operating Humidity Change (max) 10 percent per hour
Operating Wet Bulb Temp (max) 28 deg C
  Altitude  
Operating Altitude (max) 3,048 m
Operating Altitude (min) -305 m
Nonoperating Altitude (max) 12,210 m
Nonoperating Altitude (min) -305 m
  Acoustics  
Acoustics, Idle (sound power, typ) 4 Bels
  Reliability
MTBF (Hours) 1,000,000 hours
Recoverable Read Errors 10 per 1012 bits read
Nonrecoverable Read Errors 1 per 1015 bits read
Seek Errors 1 per 108 bits read
Supports S.M.A.R.T. Yes
Service Life 5 year(s)
Limited Warranty Period 5 year(s)
Barracuda
Seagate's Barracuda family of disc drives consists capacities from 9.1 to 50.1 Gbytes. Barracuda drives feature a 7,200-RPM spindle speed and an internal transfer rate of up to 29.6 Mbyte per second, making them the ideal choice for high-performance workstations, disc arrays, digital audio/video and network file-server applications.

Download PDF version of Barracuda 50download pdf version
 
Barracuda Product Shot
  Models
 ST39175LW  
ST39175LC  
ST39175FC  
ST318275LW  
ST318275LC  
ST318275FC  
ST136475FC  
ST136475LW  
ST136475LC  
ST150176LW  
ST150176LC  
ST150176FC 
 
  Capacity and Interface
Formatted Gbytes (512 bytes/sector) 9.1 18.2 36.4 50.1
Interface Fibre Channel
Ultra2 SCSI
Fibre Channel
Ultra2 SCSI
Fibre Channel
Ultra2 SCSI
Fibre Channel
Ultra2 SCSI
  Performance
Internal Transfer Rate, ZBR (Mbits/sec) 137/240
137/240
137/240
153/264
Internal Formatted Transfer Rate (Mbytes/sec) 12.9/22.5
12.5/22.9
13/23
15/26
External Transfer Rate (mbytes/sec)  
 
 
 
  Ultra 8,16 bit/Ultra2/Fibre Channel (per loop) 80 100 
80 100 
80 100 
80 100 
Track-to-track Seek Read/Write (msec) 0.8/1.1
0.8/1.1
0.8/1.1
0.9/1.2
Average Seek Read/Write (msec) 6.9/7.4
6.7/7.6
7.4/8.2
7.4/8.2
Average Latency (msec) 4.17
4.17
4.17
4.17
Spindle Speed (RPM) 7200
7200
7200
7200
 
  Configuration/Organization
Discs/Heads 3/5
5/10
10/20
11/22
Sectors per Drive (512 bytes per sector) 17783240
35566480
71132960
97809765
Cylinders 11737 11737 11737 12024
Recording Method 16/17 EPR4 16/17 EPR4 16/17 EPR4 16/17 PR4
 
  Reliability/Data Integrity
S.M.A.R.T. capable Yes Yes Yes Yes
Recoverable Read Errors per Bits Read 10 per 1012 10 per 1012 10 per 1012 10 per 1012
Nonrecoverable Read Errors per Bits Read 1 per 1015 1 per 1015 1 per 1015 1 per 1015
Seek Errors (per seek) 10 per 108 10 per 108 10 per 108 10 per 108
Service Life/Limited Warranty (years) 5/5 5/5 5/5 5/5
 
  Power Requirements
+12 VDC +/-5% (amps typ operating) 0.9 0.9 1.2 1.2
+5 VDC +/-5  % (amps typ operating)        
   Ultra SCSI, Ultra2 SCSI [FC] 0.8 
0.8 1.2 
1.2 1.3 
0.8 1.1 
Power (Idle watts)        
  Ultra SCSI/Ultra2 SCSI [FC] 9.8 
9.8 11.3 
13.4 15.5 
11.9 13.7 
 
  Environmental
Idle Acoustics (max Bels) 4.1 4.1 4.2 4
Operating Temperature (C) 5 to 50 5 to 50 5 to 50 5 to 50
Nonoperating Temperature (C) 70 to -40 70 to -40 70 to -40 70 to -40
Operating Shock (Gs) @ 11 msec 5 5 5 5
NonOperating Shock (Gs) @ 2 msec 150 150 135 150
Operating Vibration (Gs @ 5-350 Hz) 0.5 0.5 0.5 0.5
Nonoperating Vibration (<350Hx) 2 2 2 2
 
  Physical
Height (mm) 25.4 25.4 41.1 41.1
Width (mm) 101.6 101.6 101.6 101.6
Depth (mm) 146.1 146.1 146 146
Weight (kg) 0.6 0.6 0.99 0.99
 

 

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