SEAGATE TECHNOLOGY, INC. 1-800-SEAGATE http://www.seagate.com (C)opyright 1993 ST-31930N SCSI-2 Fast ÉÍÍÍÍÍÍÍÍÍÍÍ» º REAR VIEW º (ST-31930N only) ÈÍÍÍÍÍÍÍÍÍÍͼ 50 pin I/O Cable Connection ³ J1ÕÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ1¸ /ÄÄÄÄÄÄÄÄÄ\ TOP (HDA) ͵:::::::::::::::::::::::::Æͳ 0 0 0 0 ³ÍÍ ÔÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ; ÀÄ5ÄGÄGÄ12Ù BOTTOM ÉÍÍÍÍÍÍÍÍÍÍÍ» º REAR VIEW º (ST-31930NC only) ÈÍÍÍÍÍÍÍÍÍÍͼ 80 pin I/O and DC Power Wall/bracket Connection ³ J1 /ÄÄÄijÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ\ TOP (HDA) ÍÍÍÍÍÍÍÍÍÍ/ ×××××××××××××××××××× \ÍÍÍÍÍÍÍÍÍÍ (\Ä1ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ40/) BOTTOM Notes on 80 pin I/O connector: pins 1 - 4 = +12v 41 - 44 = 12v GND 34 - 36 = +5v 74 - 76 = 5v GND 37 = SYNC 77 = LEDC 38 = MTRON 78 = DLYDST 39 = SCSIA0 79 = SCSIA1 40 = SCSIA2 80 = SCSIA3 Mating NC connector: AMP US p/n: 2-557103-1 straight-in 2-557101-1 right angle to PCB ÉÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ» º RIGHT SIDE VIEW º (Both ST-31930N and ST-31930NC) ÈÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍͼ BACK Õ͸ J2 12345678 TOP (HDA) FRONT OF J1ÆÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍPÍWÍAÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ OF DRIVE Ô; :::::::: BOTTOM DRIVE ³³³³³³³³ ³Terminator Power Ù³³³³³³À Reserved Ú´Terminator Power ÄÙ³³³³ÀÄ Start Delay (12 secs * ID) ³ Enable T-Res ÄÄÙ³³ÀÄÄ Motor Start ³ Parity Enable ÄÄÄÙÀÄÄÄ Write Protect ³ ³ ³ ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿ ÀÄ´ Termination Power-source Table ³ ÃÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÁÄÄÄÄÄÄÄÄÄÄÄÄÄ¿ ³ÍÍÍÍÍ....ÍÍÍÍÍ....ÍÍÍÍÍPWA edgeÍÍÍÍÍ ³ ³ ³ ³ 1 2 1 2 1 2 ³ ³ ÖÄ· ÖÄ· A Drive Supplies Bus ³ ³ ºøºø øºøº ÖøÄø· B Drive Supplies Own ³ ³ Óø½ø øÓø½ Óø ø½ C Bus Supplies Drive ³ ³ A B C ³ ÀÄÄÄÄÄÄÄÄÄDefaultÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙ ÉÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ» º LEFT SIDE VIEW º (ST-31930N only) ÈÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍͼ If these ID jumpers are used, then ID jumpers shown in front view ARE NOT USED. FRONT TOP (HDA) J5 ÕÍÍ1¸ Õ͸BACK OF ÍÍÍÍÍÍÍÍPÍWÍAÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ͵:::Æ͵J1 OF DRIVE BOTTOM ÔÍÍ; Ô;DRIVE ³³³ ID 1 ÄÙ³ÀÄ ID 4 ID 2 ÉÍÍÍÍÍÍÍÍÍÍÍÍ» º FRONT VIEW º (Both ST-31930N and ST-31930NC) ÈÍÍÍÍÍÍÍÍÍÍÍͼ TOP (HDA) J6 ÕÍÍÍÍÍ1¸ ÍÍPÍWÍAÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ͵::::::ÆÍ * BOTTOM ÔÍÍÍÍÍ; ³ 123456 LED ÄÙ ³³³³³³ ID 4 Ù³³³³À Reserved ID 2 ÄÙ³³ÀÄ Remote LED (pin-3 +5v) ID 1 ÄÄÙÀÄÄ Spindle Synchronization (pin-6 REF SIG+) If these ID jumper are used, then ID jumpers shown in left side view J5 or 80 pin I/O cable ARE NOT USED. ST-31930N UNFORMATTED CAPACITY (MB) ________________1900 FORMATTED CAPACITY (xx SECTORS) (MB) _____1700 AVERAGE SECTORS PER TRACK ________________ ACTUATOR TYPE ____________________________ROTARY VOICE COIL TRACKS ___________________________________ CYLINDERS ________________________________3898 HEADS ______PHYSICAL______________________7 DISCS (3.5 in) ___________________________4 MEDIA TYPE _______________________________THIN FILM RECORDING METHOD _________________________ZBR RLL (1,7) INTERNAL TRANSFER RATE (mbits/sec)________38 to 62 EXTERNAL TRANSFER RATE (mbytes/sec)_______10 Sync. SPINDLE SPEED (RPM) ______________________5411 AVERAGE LATENCY (mSEC) ___________________5.54 BUFFER ___________________________________512 KByte Read Look-Ahead, Adaptive, Multi-Segmented Cache INTERFACE ________________________________SCSI-2 FAST TPI (TRACKS PER INCH) ____________________ AVERAGE ACCESS (ms) (read/write)__________9.3/10.5 Drive level without controller overhead SINGLE TRACK SEEK (ms) (read/write)_______1.2/1.7 MAX FULL SEEK (ms) (read/write)___________19.4/20.4 MTBF (power-on hours) ____________________800,000 POWER REQUIREMENTS: +12V START-UP (amps) _1.7 +12V TYPICAL (amps) __0.36 +5V START-UP (amps) __ +5V TYPICAL (amps) ___0.54 TYPICAL (watts) ______7 MAXIMUM (watts) ______ WRITE PRECOMP (cyl) ______________________N/A REDUCED WRITE CURRENT (cyl) ______________N/A LANDING ZONE (cyl) _______________________AUTO PARK IBM AT DRIVE TYPE ________________________0 or NONE 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 Already low-level formatted at the factory with 1 spare sector per track and 2 spare cylinders/unit. ZBR = Zone Bit Recording = Variable sectors per track Seagate reserves the right to change, without notice, product offerings or specifications. (08/08/94)