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- SEAGATE TECHNOLOGY, INC.
- Customer Technical Support FAX Network +1 408 438-8137
- Customer Technical Support Bulletin Boards (300-9600, 8-N-1)
- ┌──────────────────────────────────┬─────────────────────────────────┐
- │ United States +1 408 438-8771 │ United Kingdom +44 628 478011 │
- ├──────────────────────────────────┼─────────────────────────────────┤
- │ Germany +49 89 140-9331 │ Singapore +65 227-2217 │
- └──────────────────────────────────┴─────────────────────────────────┘
- (C)opyright 1991
-
-
-
- ST-3500A AT Interface
-
-
- J5 Drive ID Select and │ │ J6 (located on side
- Configuration Select Header│ │ near rear)
- ──────────────────────┬────┘ └──────────┬─────────
- │ o o o1
- │ +5v ---o o o
- 40-pin I/O Cable Connector │ ════════
- ╒════════════════════╕ o o o o o1 1 2 3
- J1│::::::::::∙::::::::1│ /─────────\ o o o o o Remote LED├┘ │ └┤Reserved
- ═╧══════════╤═════════╧═│ 0 0 0 0 │═══════════ Connection┘ └──┤Jumper
- (pin 20 missing for └─5─G─G─12┘ (see below)─┐ └Position
- keying purposes) DC Power ┌────────┘
- │
- ┌─J5─────────────────┴────────────┐
- │ ┌─┐ ┌─┐ ┌─┐ 1 │
- │ │o│ o-C┤o├E┤o├G-o │
- │ │o├B-o │o│ │o│ o │
- │ └A┘ └D┘ └F┘ H │
- │ ══════════════════════════ │
- └──Defaults shown in solid lines──┘
-
- J5 Jumper Funtion Description (* indicates default)
- ──────────────────────────────────────────────────────
- A B (A=vertical, pins 9 & 10; B=horizontal, pins 8 & 10)
- OFF OFF Drive is the slave (Drive 1).
- OFF ON Drive is the master (Drive 0) with slave (Drive 1) present.
- ON* OFF Drive s the master (Drive 0).
-
- C (C=horizontal, pins 5 & 7)
- ON Slave (Drive 1) Present is connected to J1 pin 39. Jumpers
- "D" or "E" cannot be installed if jumper "C" is installed.
-
- D (D=vertical, pins 5 & 6)
- ON* DASP- is connected to J1 pin 39. Jumpers "C", "D", "F", or
- "G" cannot be installed if jumper "E" is installed.
-
- OFF REFSIG is not connected to J1 pin 39.
-
- E (E=horizontal, pins 3 & 5)
- ON REFSIG is connected to J1 pin 39. Jumpers "C", "D", "F",
- or "G" cannot be installed if jumper "E" is installed.
-
- OFF REFSIG is not connected to J1 pin 39.
-
- F (F=vertical, pins 3 & 4)
- ON* No external reference for REFSIG. Jumpers "E", "G", or "H"
- cannot be installed if jumper "F" is installed.
-
- OFF This location provides a port for external connection of
- the synchronized spindle reference signal (pin 3) and
- ground (pin 4).
-
- G (G=horizontal, pins 1 & 3)
- ON REFSIG is connected to J1 pin 28. Jumpers "E" or "F" cannot
- be installed if jumper "G" is installed.
-
- OFF REFSIG is not connected to J1 pin 28.
-
- H (H=vertical, pins 1 & 2)
- ON Drive implements "CSEL" (Cable Select line in I/O connector)
- feature. Implementation not defined yet. Jumpers A and B
- not used if jumper H is on. (This jumper is mutually
- exclusive with jumper "G").
-
- OFF* Drive select is based on use of jumper A or B.
-
-
- J6 Jumper Funtion Description (2x3 jumper block)
- -------------------------------------------------
- 1 Remote LED connection. Pin 6 is connected to +5v through a
- 147 ohm resistor. Pin 5 is the LED driver.
-
- 2 Reserved jumper position.
-
- 3 Reserved jumper position.
-
-
- ST-3500A
-
- UNFORMATTED CAPACITY (MB) ________________502
- FORMATTED CAPACITY (xx SECTORS) (MB) _____426
- ACTUATOR TYPE ____________________________STRAIGHT ARM
- TRACKS ___________________________________10,829
- CYLINDERS __PHYSICAL______________________1,547 (user)
- HEADS ______PHYSICAL______________________7
- DISCS (3.5 in) ___________________________4
- MEDIA TYPE _______________________________THIN FILM
- RECORDING METHOD _________________________ZBR RLL (1,7)
- TRANSFER RATE INTERNAL (mbits/sec)________21.6 to 36
- SPINDLE SPEED (RPM) ______________________4,535
- AVERAGE LATENCY (mSEC) ___________________6.61
- BUFFER ___________________________________256 KByte SeaCache
- Prefetch, Multi-Segmented
- INTERFACE ________________________________AT BUS
- SECTORS PER DRIVE ________________________
- TPI (TRACKS PER INCH) ____________________2150
- AVERAGE ACCESS (ms) (read/write)__________9.9/10.6
- SINGLE TRACK SEEK (ms) ___________________2
- MAX FULL SEEK (ms) _______________________21.5
- MTBF (power-on hours) ____________________200,000
- POWER REQUIREMENTS: +12V START-UP (amps) _1.5
- +12V TYPICAL (amps) __0.4
- +5V TYPICAL (amps) ___0.2
- TYPICAL (watts) ______5
- WRITE PRECOMP (cyl) ______________________N/A
- REDUCED WRITE CURRENT (cyl) ______________N/A
- LANDING ZONE (cyl) _______________________AUTO PARK
- IBM AT DRIVE TYPE ________________________*
-
- Physical:
- Height (inches/mm): 1.00/25.4
- Width (inches/mm): 4.00/101.6
- Depth (inches/mm): 5.75/146.1
- Weight (lbs/kg): 1.8/0.80
-
- * MAY REQUIRE FORMATTING AND PARTITIONING SOFTWARE. ALSO, CHECK TO
- SEE IF YOUR CMOS SETUP HAS A "CUSTOM" OR "USER DEFINABLE" DRIVE TYPE
- AVAILABLE. (see below)
-
- Possible translation: 895 cyl, 15 heads, 62 sectors = 426,163,200
-
- Note: A "custom" or "user-definded" CMOS drivetype may ask for a
- numerical value for the Write Precompensation cylinder and for the
- Landing Zone cylinder. A basic rule-of-thumb for drive models that do
- not require the old Write Precomp technique or a Landing Zone because
- they are Auto-Parking is to add 1 to the cylinder value being used. As
- an example: If cylinders equaled 820, then both Write Precomp and
- Landing Zone would be entered as 821. Some BIOS will convert this to
- 65535 or -1, which are functionally equivalent to "none (not used)".
-
- PHYSICAL/LOGICAL equivalent to NATIVE/TRANSLATION
-
- Already low-level formatted at the factory.
-
- Since a User-definable or Custom translation geometry may be used, it
- is imperative that the values be written down and kept with your
- permanent records for retrieval in the event of CMOS battery failure.
-
- Seagate reserves the right to change, without notice, product
- offerings or specifications. (10/12/92)