USE OF 1600 BPL TAPE DRIVE FOR THE SC-4360

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP80-01794R000100200025-2
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 1
• Document Creation Date: December 12, 2016
• Document Release Date: December 26, 2001
• Sequence Number: 25
• Publication Date: August 21, 1970
• Content Type: MF

Approved For Release 2002/01/15 : CIA-RDP80-01794R000100200025-2
21 August 1970
SG-70/291
MEMORANDUM FOR: Chief, RiD/ADB
SUBJECT : Uso of 1600 bp(. Tape Drive for the SC-4360
33.
1. With regard to your suggestion that we obtain a 1600 bpi
tape drive for the SC-4360, I was told the followinq by the
Stromerg Datagraphix representative. An 1011 or other "forelgn"
tape drive using 1600 bpi cannot be hooked to the SC-113G0 because
the 1600 bpi Is phase-encoded and the SC-4360 requires IJtZI record- "Ve x'?
ing. Only the Stron1'7erg12-tape drive ha:, the capability of 1n~s?;"-"
converting phase-encoded to IIRZI without building a special inter- cc
face, and It rents for $535/month. In addition, we would have to
have the SC-1,360 modified to accept data at 60 KB and this costs
$100 (one-time charge) plus an additional $95/month on the rental
for n total of $630/month. This is $380 more per month than we are
paying for the IBM 2401 Nod 1. This seems a high price to pay for
a 30% increase in recording speed and the convenience of accepting
either 1600 or 800 bpi.
2. Actual throughput of the SC-11360 is only 4,000-4,500 paring/
hour because we have to change film every 100 feet, rather than
rated speed of 6,000-7,000 page-5/hour.,'The rD-4440 has a 1,100 fc,it
film magazine, records up to 20,000'pagns/hour, and rents for about
$4,000/month plus tape drive. It'ie 'recommended that we wait until
our work load justifies an SD-4440 pnd then change equipment rather
than trying to upgrade the . SC-4360.
EX0/0DP/SG
5X1A
Distribution:
Orig and 1 - C/RID/ADB
via C/R
1 - file L
1 - SG Chrono
0
Declassified bye
Approved For Release 2002/01/15 : CIA-RDP80-01794R000100200025-2