SEAGATE TECHNOLOGY, INC. 1-800-SEAGATE http://www.seagate.com (C)opyright 1997 ST-91420AG (Marathon 1420sl) TOP ÚÄ 44-pin I/O Connector (* see below) ³ o o1 ::::::::::::ù::::::::1 o o2 ÍPÍWÍAÍÍÍÍÍÍÍÍÍÍÍØÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ ³ ³ ³ pin-20 removed for keying ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙ ³ ³ ³ ³ ³ ³ Drive is Master, Slave drive may be detected ÄÄÄÄÄÄÄÄÄ 0 0 using the DASP- signal Drive is Slave ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ 0 1 Cable Select (horizontal jumper pins 2-4) ÄÄÄÄÄÄÄÄÄÄÄÄÄ<<< * Drive uses +5vdc power supplied to the drive via the interface connector. The drive does NOT make use of a +12vdc power line. pin-41 +5vdc (Logic) pin-42 +5vdc (Motor) pin-43 Ground pin-44 Reserved ST-91420AG Marathon 1420sl FORMATTED CAPACITY _______________________1441.9 ACTUATOR TYPE ____________________________VOICE COIL CYLINDERS __PHYSICAL______________________ HEADS ______PHYSICAL______________________4 DISCS (2.5 in) ___________________________2 MEDIA TYPE _______________________________THIN FILM on GLASS HEAD TYPE ________________________________MR RECORDING METHOD _________________________ZBR PRML (16/17) INTERNAL TRANSFER RATE (Mbits/sec) _______up to 71.3 EXTERNAL TRANSFER RATE (Mbytes/sec) ______up to 16.6 PIO MODE _________________________________4 DMA SUPPORT ______________________________EISA Type B SPINDLE SPEED (RPM) ______________________4,508 AVERAGE LATENCY (mSEC) ___________________6.65 BUFFER ___________________________________103 Kbyte Read/Write Multiple, Read Look-Ahead, Multi-Segmented INTERFACE ________________________________ATA-3 S.M.A.R.T. SECTORS PER DRIVE (LBA mode) _____________2,816,352 TPI (TRACKS PER INCH) ____________________7,194 BPI (KBITS PER INCH) _____________________154 AVERAGE ACCESS (ms read/write) ___________12/14 SINGLE TRACK SEEK (ms read/write) ________4/5 MAX FULL SEEK (ms read/write) ____________26/28 MTBF (power-on hours) Office _____________350,000 SHOCK (G's): operating (Read/Write) __________125 abnormal ________________________ nonoperating ____________________350 ACOUSTICS (dBA) (typ/max) ________________24/30 POWER DISSIPATION (watts) ________________ POWER REQUIREMENTS: +5V START-UP (amps) __1.1 POWER MANAGEMENT (Watts): ACTIVE _______________2.5 IDLE _________________1.0 STANDBY ______________0.3 SLEEP ________________0.1 WRITE PRECOMP (cyl) ______________________N/A REDUCED WRITE CURRENT (cyl) ______________N/A LANDING ZONE (cyl) _______________________AUTO IBM AT DRIVE TYPE ________________________* Physical: Height (inches/mm): /12.7 Width (inches/mm): 2.76/70.10 Depth (inches/mm): /100.49 Weight (oz/g): /153 * 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 translations: This translation is generally acceptable, as is, for non-DOS operating systems: 2794 cyl, 16 heads, 63 sectors = 1,441,972,224 DOS operating systems may require a translation that uses larger values for the CMOS head parameter which lowers cylinders below 1024: 694 cyl, 64 heads, 63 sectors = 1,440,940,032 Other FULL-CAPACITY solutions for DOS operating systems include third-party drive preparation software, system BIOS which supports LBA mode or bios driven host adapters. Otherwise, capacity may be limited to: 1024 cyl, 16 heads, 63 sectors = 528,482,304 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. (04/25/97)