Quantum Daytona 170/256/341/514

Drive                         127    170     256     341     514  
Cylinder                             538     723     1011    997
Heads                                10      11      15      16
Sectors                              62      63      44      63
Write Precomp                        65535*  65535*  65535*  65535*
Landing Zone                         538     723     1011    997

Configuration
Disks                         1      2       2       3       4
Heads/Recording Surfaces      2      3       4       6       8
Standby to Drive Ready (sec)  2.0    2.5     2.5     2.8     3.0


Tracks Per Surface            1704
Sectors Per Track             54 to 92
Bytes Per Sector              512
Track Density                 3100 tpi
Flux Density                  53,700 fci
Recording Density             71,600 bpi
Encoding Method               RLL 1,7
Average Seek Time             17 ms
Track-to-Track Seek Time      5 ms
Full Stroke Seek Time         24 ms
verage Rotational Latency     6.66 ms
Rotational Speed              4500 RPM
Internal Data Rate            22 to 36 MB/sec
Burst Transfer Rate (buffer)  10 MB/sec
Buffer Size                   128 KB
Interleave                    1:1

Projected Field MTBF          350,000 hours
Preventive Maintenance        Not Required
Uncorrectable Error Rate      <1 in 1014
Error-Correction Method       Reed Solomon
Warranty*                     1 year

PHYSICAL SPECIFICATIONS
  inches (mm)  
      Width                               2.75 (70)
      Length                              3.94 (100)    
      Height                                  
        Daytona 127, 170 & 256            0.50 (12.5)
        Daytona 341 & 514                 0.75 (19)
  
  ounces (gm)              
        Daytona 127                       4.4 (125)
        Daytona 170                       4.6 (130  
        Daytona 256                       4.6 (130)
        Daytona 341                       6.4 (180)
        Daytona 514                       6.6 (185)
  
ENVIRONMENTAL LIMITS
  Operating       
      Temperature (:C)                    5 to 55
      Non-condensing Humidity (%)         10 to 90
      Shock (G, 11 ms)                    10
      Vibration (G, peak-to-peak)         1
      Altitude (ft.)                      -200 to 10,000
  
  Non-Operating
      Temperature (:C)                    -40 to 65
      Non-condensing Humidity (%)         10 to 90
      Shock4 (G, 2 ms)                    300
      Vibration (G, peak-to-peak)         5
      Altitude (ft.)                      -200 to 40,000
  
  Sound Pressure                      
      Maximum @ Idle (dBA)                33

POWER SPECIFICATIONS
  Nominal Voltage                         +5
  Voltage Margin (%)                      15              
  Typical Power Draw5  (W)
      Standby                             0.2
      Idle                                
        Daytona 127, 170, & 256           1.2
        Daytona 341 & 514                 1.4
  
      Active
        Daytona 127, 170, & 256           1.9
        Daytona 341 & 514                 2.1
  
      Operating                           Read   Write  Seek
        Daytona 127, 170, & 256           2.5    2.6    2.5
        Daytona 341 & 514                 2.6    2.8    2.7
  
  Peak Spin-up Current (mA)
        Daytona 127, 170 & 341            1,200
        Daytona 256 & 514                 1,300

FEATURES
  DisCache. and WriteCache               Defect Free Interface. Firmware 
  Adaptive Segmentation                  DiskWare
  AutoRead and AutoWrite                 ShockLock      
  AutoTransfer                           AutoIdle and AutoPark
  Local Bus with I/O Channel Ready       StackWrite
  Fast Multiword DMA Support             MCC Compatibility
  112-bit Reed Solomon ECC On-the-Fly
    AT Bus Cable Select