SEAGATE TECHNOLOGY, INC. Customer Technical Support FAX Network +1 408 438-8137 Customer Technical Support Bulletin Boards (300-9600, 8-N-1) ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÂÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿ ³ United States +1 408 438-8771 ³ United Kingdom +44 628 478011 ³ ÃÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´ ³ Germany +49 89 140-9331 ³ Singapore +65 227-2217 ³ ÀÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÁÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙ (C)opyright 1991 ST-3283A Rear View Mini Power ÚÄ 40 pin AT Interface I/O connector Connector ³ ÚÄÁÄ¿ ³ (top) DC power ³o o³ 5 G ÕÍÍÍÍÍÍÍÍÍÍ ÍÍÍÍÍÍÍÍ͸ /Ä5ÄGÄGÄ12\ ͵o oƵ0 0 0Æ͵::::::::::ú::::::::1Æ͵ 0 0 0 0 ÆÍ ...Ä¿ ³ ³ 12 ÔÍÍÍÍÍÍÍÍÍͳÍÍÍÍÍÍÍÍ; ÀÄÄÄÄÄÄÄÄÄÙ ³ ³ ³ (bottom) À(pin 20 missing for (Factory test jumper ³ ³ keying purposes) block located at side) ³ ³ OFF OFF Drive is Master (single) OFF ON Drive is Master with Slave present (dual) ON OFF Drive is Slave (dual) ST-3283A Front View Clock Ground Ä¿ ÚÄ (Pin 3 removed for key) ³ ³ (top) -o o o o o Ï o1 ÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ+o o o o o o o ÍÍÍÍÍ (bottom) ³ ³ ³ ÀÄÂÄÄÄÙ ³ ³ ³ ³ Remote LED ÄÄÄÄÄÙ ³ ³ ³ Reserved ÄÄÄÄÄÄÄÙ ³ ³ Ext. Spindle Clock Synch ÄÄÄÄÄÄÄÄÄÙ ³ Reserved ¿ ³ Reserved ÃÄÄÄÄÄÄÄÄÄÄÄÄÙ Reserved ³ Reserved Ù ST-3283A UNFORMATTED CAPACITY _____________________ FORMATTED CAPACITY (xx SECTORS) __________245.36 ACTUATOR TYPE ____________________________STRAIGHT ARM CYLINDERS __PHYSICAL/LOGICAL______________ HEADS ______PHYSICAL/LOGICAL______________5 DISCS (3.5 in) ___________________________3 MEDIA TYPE _______________________________THIN FILM HEAD TYPE ________________________________THIN FILM RECORDING METHOD _________________________ZBR RLL (1,7) INTERNAL TRANSFER RATE (mbits/sec) _______15.01 to 24.50 SPINDLE SPEED (RPM) ______________________4,500 AVERAGE LATENCY (mSEC) ___________________6.67 BUFFER ___________________________________128 Kbyte SeaCache Read Look-Ahead, Multi-Segmented INTERFACE ________________________________AT SECTORS PER DRIVE ________________________479,220 BYTES PER CYLINDER _______________________ TPI (TRACKS PER INCH) ____________________1,960 BPI (BITS PER INCH) ______________________38,000 AVERAGE ACCESS (ms) ______________________12 SINGLE TRACK SEEK (ms) ___________________<4 MAX FULL SEEK (ms) _______________________35 MTBF (power-on hours) Office _____________200,000 POWER DISSIPATION (watts) ________________ POWER REQUIREMENTS: +12V START-UP (amps) _1.5 +5V TYPICAL (amps) ___0.55 POWER MANAGEMENT (Watts): ACTIVE _______________5.7 IDLE _________________3.5 STANDBY ______________1.0 SLEEP ________________ WRITE PRECOMP (cyl) ______________________N/A REDUCED WRITE CURRENT (cyl) ______________N/A LANDING ZONE (cyl) _______________________AUTO IBM AT DRIVE TYPE ________________________* Physical: Height (inches/mm): 1.00/25.4 Width (inches/mm): 4.02/102.1 Depth (inches/mm): 5.77/146.6 Weight (lbs/kg): 1.5/0.68 * 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: 978 cyl, 14 heads, 35 sectors = 245,360,640 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 ZBR = Zone Bit Recording = Variable sectors per track 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. (10/23/91)