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 1994 ST-12400W SCSI-2 Fast Wide (Hawk 2) +===========+ # REAR VIEW # (ST-12400W/WD only) +===========+ (TOP) J1-Auxiliary ___________________ /-- -1\/=========\ =( ×××××××××××××××××1)=|::::::|| 0 0 0 0 #= \------------|----/ \ -- 2/\-5-G-G-12/ 68 pin I/O Cable/ |||||| |||||| Auxiliary option header |||||| SCSI ID = 0 (none) pin-11 +5v ---------/||||\--- SCSI ID = 1 pin-10 GND ----------/||\---- SCSI ID = 2 SCSI ID = 8 -------+---/\-+--- SCSI ID = 4 or pin-8 BUSY ----/ \--- or pin-6 REFIND+ +===========+ # REAR VIEW # (ST-12400WC only) +===========+ 80 pin I/O and DC Power Wall/bracket Connection | Female J1 /----|---------------\ TOP (HDA) ==========/ ×××××××××××××××××××× \========== (\-1------------------40/) 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, Male 80-pin 2-557101-1 right angle to PCB +=================+ # RIGHT SIDE VIEW # (Both ST-12400W and ST-12400WC) +=================+ BACK #=# J2 12345678 TOP (HDA) FRONT OF J1#======================P=W=A======================= OF DRIVE \=/ :::::::: BOTTOM DRIVE |||||||| |Terminator Power /||||||\ Reserved /|Terminator Power -/||||\- Start Delay (12 secs * ID) | Enable T-Res --/||\-- Motor Start | Parity Enable ---/\--- Write Protect | | | /-ST12400W only------------------\ \-| Termination Power-source Table | +--------------------------------+-------------\ |=====....=====....=====PWA edge===== | | | | 1 2 1 2 1 2 | | #-# #-# #---# A Drive Supplies Bus | | #o#o o#o# #o-o# B Drive Supplies Own | | #o#o o#o# o o C Bus Supplies Drive | | A B C | \---------Default------------------------------/ Note: The model ST-12400WC drive cannot furnish terminator power, because no pins on the 80 pin I/O connector are devoted to terminator power. +============+ # FRONT VIEW # (ST-12400W only) +============+ TOP (HDA) J6 #=====1# ==P=W=A==========================#::::::#= * BOTTOM \=====2/ | |||||| LED -/ |||||| |||||| Auxiliary option header |||||| SCSI ID = 0 (none) pin-11 +5v ---------/||||\--- SCSI ID = 1 pin-10 GND ----------/||\---- SCSI ID = 2 SCSI ID = 8 -------+---/\-+--- SCSI ID = 4 or pin-8 BUSY ----/ \--- or pin-6 REFIND+ If these ID jumper are used, then ID jumpers shown in rear view Aux-J1 or 80 pin I/O cable ARE NOT USED. +============+ # FRONT VIEW # (ST-12400WC only) +============+ TOP (HDA) J6 #=====1# ==P=W=A==========================#::::::#= * BOTTOM \=====2/ | |||||| LED -/ |||||| |||||| SCSI ID = 8 ---------/||||\--- Remote LED (pin-2 cathode) SCSI ID = 4 ----------/||\---- Sync Spindle SCSI ID = 2 -----------/| SCSI ID = 0 (none) \----- SCSI ID = 1 ST-12400W Hawk 2 UNFORMATTED CAPACITY (MB) ________________2537 FORMATTED CAPACITY (xx SECTORS) (MB) _____2148 AVERAGE SECTORS PER TRACK ________________84 rounded down ACTUATOR TYPE ____________________________ROTARY VOICE COIL TRACKS ___________________________________49,799 CYLINDERS ________________________________2,621 user HEADS ______PHYSICAL______________________19 DISCS (3.5 in) ___________________________10 MEDIA TYPE _______________________________THIN FILM RECORDING METHOD _________________________ZBR RLL (1,7) INTERNAL TRANSFER RATE (mbits/sec)________26.8 to 45.6 EXTERNAL TRANSFER RATE (mbyte/sec) _______20 Sync SPINDLE SPEED (RPM) ______________________5,411 AVERAGE LATENCY (mSEC) ___________________5.54 BUFFER ___________________________________256/1024 KByte Read Look-Ahead, Adaptive, Multi-Segmented Cache INTERFACE ________________________________SCSI-2 FAST ASA SECTORS PER DRIVE ________________________ TPI (TRACKS PER INCH) ____________________3000 AVERAGE ACCESS (ms) (read/write)__________9.3/10.8 Drive level without controller overhead SINGLE TRACK SEEK (ms) ___________________1 MAX FULL SEEK (ms) _______________________21 MTBF (power-on hours) ____________________500,000 SHOCK (G's): operating (Read/Write) __________10 nonoperating ____________________60 ACOUSTICS (typ/max dBA) __________________ POWER REQUIREMENTS: +12V START-UP (amps) _2.4 +12V TYPICAL (amps) __0.57 +5V START-UP (amps) __0.8 +5V TYPICAL (amps) ___0.42 TYPICAL (watts) ______8.9 MAXIMUM (watts) ______10.8 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): 1.63/41.4 Width (inches/mm): 4.00/101.6 Depth (inches/mm): 5.75/146.1 Weight (lbs/kg): 2.5/0.99 Already low-level formatted at the factory with twelve spare sectors per cylinder and two spare cylinders/unit. ZBR = Zone Bit Recording = Variable sectors per track Seagate reserves the right to change, without notice, product offerings or specifications. (08/26/94)