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-1057A ===PWA===================================================== /....................\ /---------\ ...................1 | O O O O | 1 o o 2 --------\ \ Cable Connector \-5-G-G-12/ 3 o o 4 ------\ | 5 o o 6 ----\ | | 7 o o 8 --\ | | | 9 o o 10 \ | | | | | | | | \-- Life-Test (Factory use) | | | \---- Master * | | \------ Slave Present (on Master only) * | \-------- Reserved \---------- Remote LED * No jumpers if unit is Slave ST-1057A UNFORMATTED CAPACITY (MB) ________________N/A FORMATTED CAPACITY (xx/17 SECTORS) (MB) __53.4 ACTUATOR TYPE ____________________________VOICE COIL TRACKS ___________________________________6,144 CYLINDERS ___PHYSICAL/LOGICAL_____________NA/1,024 HEADS _______PHYSICAL/LOGICAL_____________3/6 DISCS ____________________________________2 MEDIA TYPE _______________________________THIN FILM RECORDING METHOD _________________________RLL ZBR TRANSFER RATE INTERNAL (mbits/sec) _______8.2/10/12 SPINDLE SPEED (RPM) ----------------------3,528 INTERFACE ________________________________AT BUS TPI (TRACKS PER INCH) ____________________1,300 BPI (BITS PER INCH) ______________________21,600 AVERAGE ACCESS (ms) ______________________18 SINGLE TRACK SEEK (ms) ___________________6 MTBF (power-on hours) ____________________150,000 POWER REQUIREMENTS: +12V START-UP (amps) _2.0 +12V TYPICAL (amps) __0.7 +5V START-UP (amps) __0.63 +5V TYPICAL (amps) ___0.4 TYPICAL (watts) ______8 MAXIMUM (watts) ______ BUFFERED STEP PULSE RATE (micro sec) _____ WRITE PRECOMP (cyl) ______________________N/A REDUCED WRITE CURRENT (cyl) ______________N/A LANDING ZONE (cyl) _______________________AUTO PARK IBM AT DRIVE TYPE ________________________* * MAY REQUIRE FORMATTING AND PARTITIONING SOFTWARE. ALSO, CHECK TO SEE IF YOUR CMOS SETUP HAS A "CUSTOM" OR "USER DEFINABLE" DRIVE TYPE AVAILABLE. Translation to use: 1024 cyl, 6 heads, 17 sectors = 53,477,376 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.