Jnc: Removable-pack

2024-02-11T16:19:41Z

Removable-pack

Jnc: A good start

2024-02-11T01:57:41Z

A good start

New page

{{Infobox Disk drive
| name = Trident T-50 - T-300 disk drives 
| manufacturer = [[Century Data Systems]] 
| rpm = 3600
| revolution time = 8.3 msec
| one track seek = 6 msec
| average seek = 25 msec
| maximum seek = 55 msec
| tracks = 815

| tracks per inch = 370
| recording method = [[Modified Frequency Modulation|MFM]]

}}
The '''Trident disk drives''' were a series of popular [[Original Equipment Manufacturer|OEM]] multi-[[platter]] large [[disk]] drives, produced by [[Century Data Systems]]. The most common/well-known were the '''T-80''' and '''T-300'''.

{| class="wikitable"
! !! T-50 !! T-80 !! T-200 !! T-300
|-
| Total size || 54.7M || 82.1M || 208.1M || 312.2M
|-
| Surfaces || 5 || 5 || 19 || 19
|-
| Bytes/track || 13,440 || 20,160 || 13,440 || 20,160
|-
| Density || 4040 bpi || 6060 bpi || 4040 bpi || 6060 bpi
|-
| Transfer rate || 806 KB || 1209 KB || 806 KB || 1209 KB
|-
| Width || 17.5" || 17.5" || 19.5" ||19.5"
|-
| Depth || 32" || 32" || 33" || 33"
|-
| Height || 10.4" || 10.4" || 36" || 36"
|-
| Weight || 220 pounds || 220 pounds || 480 pounds || 480 pounds
|}

Several well-known systems used them, including the [[Xerox Alto]], [[CADR]], and the 'MIT-MC' [[Incompatible Timesharing System|ITS]] machine.


{{semi-stub}}

==External links==

* [http://www.bitsavers.org/pdf/centuryData/Trident/ Trident] - documentation at [[Bitsavers]]
** [http://www.bitsavers.org/pdf/centuryData/Trident/76205-902_tridentSpec_Nov80.pdf Performance Specifications - Models T25/T50/T80/T200 and T300]
* [http://www.bitsavers.org/pdf/centuryData/brochures/Calcomp_Disk_Products_Brochure_Jun78.pdf CalComp Memory Products]
* [http://www.bitsavers.org/pdf/xerox/alto/ifs_trident/ IFS and the Trident disk controller]
** [http://www.bitsavers.org/pdf/xerox/alto/ifs_trident/TriconDoc.pdf Trident disk for the Alto]

[[Category: Disk Drives]]

@@ Line 19: / Line 19: @@
 <!-- | power consumption = 20 A per drive (starting); 4.3A A per drive (running) -->
 }}
-The '''Trident disk drives''' were a series of popular [[Original Equipment Manufacturer|OEM]] multi-[[platter]] large [[disk]] drives, produced by [[Century Data Systems]]. The most common/well-known were the '''T-80''' and '''T-300'''.
+The '''Trident disk drives''' were a series of popular [[Original Equipment Manufacturer|OEM]] multi-[[platter]] large [[removable-pack disk]] drives, produced by [[Century Data Systems]]. The most common/well-known were the '''T-80''' and '''T-300'''.
 {| class="wikitable"

Trident disk drives - Revision history

Jnc: Removable-pack

Jnc: A good start