|
| |
ST-1581N SCSI-2 Fast
+-----------+
| REAR VIEW |
+-----------+
50 pin I/O Cable Connection
+------------------------1+
J4|:::::::::::::::::::::::::| /---------\
-+--P-W-A--------------------| 0 0 0 0 |--
+------1 +------1 +------1 +-5-G-G-12+
+------+ +---+--+ +------+
+Terminating Resistors+
+----------------+
| LEFT SIDE VIEW |
+----------------+
12345678
+--------+
FRONT J6|::::::::| BACK
OF ----------+1-------+------P-W-A-------------------------- OF
DRIVE |||||||| DRIVE
Factory Use +||||||+ Terminator Power (see below)|
Motor Start -+||||+- Terminator Power (see below)+--+
Start Delay --+||+-- Reserved +---------------------+----------+
Write Protect ---++--- Parity | Termination Power-source Table |
+--------------------------------+--------+
| 7 8 7 8 7 8 |
| +-+ +-+ A Drive Supplies Own |
| ø|ø| |ø|ø +ø-ø+ B Drive Supplies Bus |
| ø+ø+ +ø+ø +ø ø+ C Bus Supplies Drive |
| A B C |
+-----------------------------------------+
+-----------------+
| RIGHT SIDE VIEW |
+-----------------+
+---+
BACK J5|:::| FRONT
OF -----+---+---P-W-A--------------------------------------- OF
DRIVE ||| DRIVE
ID 4 -+|+- ID 1 If these ID jumpers are used,
ID 2 then ID jumpers shown in front
view ARE NOT USED.
+------------+
| FRONT VIEW |
+------------+
If these ID jumper are used,
+-----+ then ID jumpers shown in right side
J7|:::::| view ARE NOT USED.
--+1----+-------P-W-A---------------------
|||||
ID 1 +|||+ Remote LED
ID 2 -+|+- Spindle Synchronization
ID 4
ST - 1581N
UNFORMATTED CAPACITY (MB) ________________613
FORMATTED CAPACITY (xx SECTORS) (MB) _____525
AVERAGE SECTORS PER TRACK ________________77
ACTUATOR TYPE ____________________________VOICE COIL
TRACKS ___________________________________13,302
CYLINDERS ________________________________1,476
HEADS ____________________________________9
DISCS (3.5 in) ___________________________5
MEDIA TYPE _______________________________THIN FILM
RECORDING METHOD _________________________ZBR RLL (1,7)
INTERNAL TRANSFER RATE (mbits/sec) _______20 to 32
SPINDLE SPEED (RPM) ______________________4,412
AVERAGE LATENCY (mSEC) ___________________6.8
BUFFER ___________________________________256 Kbyte
Read Look-Ahead, Adaptive,
Multi-Segmented Cache
INTERFACE ________________________________SCSI-2 Fast
SECTOR PER DRIVE _________________________1,022,868
TPI (TRACKS PER INCH) ____________________1760
BPI (BITS PER INCH) ______________________
AVERAGE ACCESS (ms) ______________________14
SINGLE TRACK SEEK (ms) ___________________2.5
MAX FULL SEEK (ms) _______________________26
MTBF (power-on hours) ____________________150,000
POWER REQUIREMENTS: +12V START-UP (amps) _2.5
+12V TYPICAL (amps) __0.54
+5V TYPICAL (amps) ___0.53/0.8(ND)
TYPICAL (watts) ______9/11.0(ND)
MAXIMUM (watts) ______15
WRITE PRECOMP (cyl) ______________________N/A
REDUCED WRITE CURRENT (cyl) ______________N/A
LANDING ZONE (cyl)________________________AUTO PARK
IBM AT DRIVE TYPE ________________________0 or NONE
Already low-level formatted at the factory.
ZBR = Zone Bit Recording = Variable sectors per track
Seagate reserves the right to change, without notice, product
offerings or specifications. (4/12/91) |