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 1993 ST-3145A 4-pin DC TOP Power #========== =========#/-4-3-2-1-\ =======#::::::::::o::::::::1#| 0 0 0 0 #= \====================/\-5-G-G-12/ (pin-20 missing for keying purposes) (back of drive) 2o-o1 --------\ o-o ------\ | o-o ----\ | | (Options jumper located on bottom) 8o-o7 --\ | | | (front of drive) | | | | | | | \-- Master OFF, Slave ON ----- 0 0 1 | | \---- Slave Present ON --------- 0 1 0 | \------ Factory Test | | | | (do not use) S M S \-------- Reserved i a l n s a g t v l e e e r ST-3145A UNFORMATTED CAPACITY _____________________ FORMATTED CAPACITY (xx SECTORS) __________130.2 AVERAGE SECTORS PER TRACK ________________ rounded down ACTUATOR TYPE ____________________________VOICE COIL TRACKS ___________________________________ CYLINDERS ________________________________(user) HEADS _(PHYSICAL)_________________________2 DISCS (3.5 in) ___________________________1 MEDIA TYPE _______________________________THIN FILM HEAD TYPE ________________________________THIN FILM RECORDING METHOD _________________________ZBR RLL (1,7) INTERNAL TRANSFER RATE (mbits/sec) _______ to 21.1 SPINDLE SPEED (RPM) ______________________3,811 AVERAGE LATENCY (mSEC) ___________________7.87 BUFFER ___________________________________32 Kbyte Multisegmented INTERFACE ________________________________AT BYTES PER TRACK __________________________ SECTORS PER DRIVE ________________________255,255 TPI (TRACKS PER INCH) ____________________2,400 BPI (BITS PER INCH) ______________________42,700 AVERAGE ACCESS (ms) ______________________16 SINGLE TRACK SEEK (ms) ___________________5 MAX FULL SEEK (ms) _______________________32 MTBF (power-on hours) Office _____________250,000 POWER REQUIREMENTS: +12V START-UP (amps) _1.0 POWER MANAGEMENT (Watts): ACTIVE _______________4.6 IDLE _________________3.9 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: 1001 cyl, 15 heads, 17 sectors = 130,690,560 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. (05/12/93)