107 lines
4.7 KiB
Plaintext
107 lines
4.7 KiB
Plaintext
SEAGATE TECHNOLOGY, INC.
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Customer Technical Support FAX Network +1 408 438-8137
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Customer Technical Support Bulletin Boards (300-9600, 8-N-1)
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ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÂÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿
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³ United States +1 408 438-8771 ³ United Kingdom +44 628 478011 ³
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ÃÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´
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³ Germany +49 89 140-9331 ³ Singapore +65 227-2217 ³
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ÀÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÁÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙ
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(C)opyright 1991
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ST-157A
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/ÄÄÄÄÄÄÄ\
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6-pin jumper version ³O O O O³
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À5ÄGÄGÄ12
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ÍÍÍÍÍÍÍÑÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÑÍÍÍÍÍÍÍÍÍÍÍ
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o o o ³::::::::::::::::::::1³
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o o o ÔÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ;
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³ ³ ³
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³ 0 1 Single Drive 0=open
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³ 1 1 Dual-Drive Master 1=closed
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³ 1 0 Dual-Drive Slave
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³
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ÀÄÄÄÄÄ Optional External LED
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/ÄÄÄÄÄÄÄ\
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10-pin jumper version ³O O O O³
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À5ÄGÄGÄ12
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ÍÍÍÍÍÍÍÍÍÍÍÑÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÑÍÍÍÍÍÍÍÍÍÍÍ
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o o o o o ³::::::::::::::::::::1³
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o o o o o ÔÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ;
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³ ³ ³ ³ ³
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³ ³ ³ ³ À LT (Life Test, factory use only)
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³ ³ 0 1 Single Drive 0=open
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³ ³ 1 1 Dual-Drive Master 1=closed
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³ ³ 0 0 Dual-Drive Slave
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³ ÀÄÄÄÄÄ EWS (factory use only)
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ÀÄÄÄÄÄÄÄ Active Busy (Optional External LED)
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ST - 157A
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UNFORMATTED CAPACITY (MB) ________________57
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FORMATTED CAPACITY (26 SECTORS) (MB) _____44.7
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ACTUATOR TYPE ____________________________STEPPER
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TRACKS ___________________________________3,360
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CYLINDERS ________________________________560
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HEADS ____________________________________6
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DISCS ____________________________________3
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MEDIA TYPE _______________________________THIN FILM
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RECORDING METHOD _________________________RLL (2,7)
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TRANSFER RATE (mbits/sec) ________________7.5
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SPINDLE SPEED (RPM) ______________________3,600
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AVERAGE LATENCY (mSEC) ___________________8.3
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BUFFER ___________________________________2 Kbyte
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INTERFACE ________________________________AT BUS
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SECTORS PER DRIVE ________________________87,360
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TPI (TRACKS PER INCH) ____________________824
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BPI (BITS PER INCH) ______________________20,280
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AVERAGE ACCESS (ms) ______________________40/28*
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SINGLE TRACK SEEK (ms) ___________________8
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MAX FULL SEEK (ms) _______________________ /70
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MTBF (power-on hours) ____________________150,000
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POWER REQUIREMENTS: +12V START-UP (amps) _2.0
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+12V TYPICAL (amps) __0.35
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+5V TYPICAL (amps) ___0.9
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TYPICAL (watts) ______9
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MAXIMUM (watts) ______29
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BUFFERED STEP PULSE RATE (micro sec) _____3-200
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WRITE PRECOMP (cyl) ______________________N/A
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REDUCED WRITE CURRENT (cyl) ______________N/A
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LANDING ZONE (cyl)________________________AUTO PARK
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IBM AT DRIVE TYPE ________________________36,(or 14, 17 or 21)**
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*ST157A-0/ST157A-1
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Possible translation: 733 cyl, 7 heads, 17 sectors = 44,660,224
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Possible translation: 1024 cyl, 5 heads, 17 sectors = 44,564,480
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Note: A "custom" or "user-definded" CMOS drivetype may ask for a
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numerical value for the Write Precompensation cylinder and for the
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Landing Zone cylinder. A basic rule-of-thumb for drive models that do
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not require the old Write Precomp technique or a Landing Zone because
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they are Auto-Parking is to add 1 to the cylinder value being used. As
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an example: If cylinders equaled 820, then both Write Precomp and
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Landing Zone would be entered as 821. Some BIOS will convert this to
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65535 or -1, which are functionally equivalent to "none (not used)".
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** MAY REQUIRE FORMATTING AND PARTITIONING SOFTWARE. ALSO, CHECK TO
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SEE IF YOUR CMOS SETUP HAS A "CUSTOM" OR "USER DEFINABLE" DRIVE TYPE
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AVAILABLE.
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PHYSICAL/LOGICAL equivalent to NATIVE/TRANSLATION
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WARNING - Already low-level formatted at the factory.
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Since a User-definable or Custom translation geometry may be used, it
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is imperative that the values be written down and kept with your
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permanent records for retrieval in the event of CMOS battery failure.
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Seagate reserves the right to change, without notice, product
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offerings or specifications. (6/26/90)
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