Specifications: Seagate 18.2-GB ST118202FC Cheetah 18FC Fibre Channel Hard-Disk Drive
General | Functionality | Internal Drive Characteristics | Reliability | Electrical | Heat/Power Dissipation | Shock | Physical | Regulatory | Features
NOTE: These specifications are provided by the manufacturer for information purposes only and do not constitute an extension of Dell's warranty to you. Dell's warranty is contained in the end user documentation.

General

Manufacturer Seagate
Model number ST118202FC
Model name Cheetah 18FC
Interface FC-AL

Functionality
Capacity (formatted) 18.2 GB
Rotational speed 10,025 rpm
Average rotational frequency 2.99 ms
Interleave factor 1:1
Spin-up time 30 sec
Stop time <30 sec
Multisegmented cache 967.5 KB
Seek time (including controller overhead):  

Read

 6.0 ms (typical)

Write

 6.8 ms (typical)
Data buffer to/from disc media 23.9 MB/sec (average)
Fibre Channel interface maximum instantaneous transfer rate 106 MB/sec per port
(dual port = 212 MB/sec)

Internal Drive Characteristics
Read/write heads 24
Bytes per track 104,840 to 159,008
Megabytes per surface 939
Tracks per surface 6962

Reliability
MTBF 1,000,000 POH
Service life 5 years
Preventive maintenance none required
Data errors:  

Seek error rate

 <10 in 108

Unrecovered data

 <1 sector in 1015 bits transferred

Miscorrected data

 <1 sector in 1021 bits transferred

Error correction

 96-bit Reed Solomon
SMART-compliant yes

Electrical
Voltages +5 VDC (± 5%)
+12 VDC (± 5%)

Heat/Power Dissipation
Typical seek/read DC power dissipation 20.5 W (70 BTU/hr)
Typical power dissipation (idle state) 18.4 W (63 BTU/hr)

Shock*
Operating:  

Normal (error-free operation)

 2 G

Abnormal (damage-free operation)

 10 G
Nonoperating 50 G
* Half-sine wave, 11-ms maximum duration

Physical
Height 40.64 mm (1.6 inches)
Width 101.6 mm (4.0 inches)
Depth 146.1 mm (5.75 inches)
Weight 0.91 kg (2.0 lb)

Regulatory

  • UL 1950
  • CSA standard CAN/CSA C22.2 No. 950-95
  • VDE0805 and EN60950 

Features

  • Integrated dual-port FC-AL controller
  • Concurrent dual-port transfers
  • Support for FC arbitrated loop and private and public loop attachment
  • Differential copper FC drivers and receivers
  • Firmware downloadable using the FC-AL interface
  • Drive selection ID and configuration options are set on the FC-AL back panel or through interface commands
  • Fibre Channel worldwide name uniquely identifies the drive and each port
  • User-selectable logical block size (512 to 4096 bytes per logical block)
  • Selectable frame sizes from 128 to 2112 bytes
  • Industry-standard 3.5-inch low-profile form factor dimensions
  • Programmable logical block reallocation scheme
  • Flawed logical block reallocation at format time
  • Programmable autowrite and read reallocation
  • 96-bit Reed-Solomon error correction code
  • Sealed head and disc assembly (HDA)
  • No preventive maintenance or adjustments required
  • Dedicated head-landing zone
  • Automatic shipping lock
  • Embedded Grey Code track address
  • Self-diagnostics performed at power-on
  • 1:1 interleaving factor
  • Zone bit recording (ZBR)
  • Vertical, horizontal, or top-down mounting
  • Dynamic spindle brake
  • 1024-KB data buffer
  • Embedded servo design
  • Supports SCSI enclosure services via interface connector
  • 128-deep task set (queue)
  • Supports up to 32 initiators
  • Reallocation of defects on command (post format)
  • Fibre Channel interface transports SCSI protocol
  • Supports SCSI Enclosure Services through the interface connector