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SEAGATE TECHNOLOGY, INC.
1-800-SEAGATE
http://www.seagate.com
(C)opyright 1995
ST-31055N Ultra-SCSI (Hawk 2XL)
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º REAR VIEW º (ST-31055N)
ÈÍÍÍÍÍÍÍÍÍÍͼ
50 pin I/O Cable Connection
³
J1ÕÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ1¸ /ÄÄÄÄÄÄÄÄÄ\ TOP (HDA)
͵:::::::::::::::::::::::::Æͳ 0 0 0 0 ³ÍÍ
ÔÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ; ÀÄ5ÄGÄGÄ12Ù BOTTOM
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º RIGHT SIDE VIEW º (ST-31055N)
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BACK Õ͸ J2 12345678 TOP (HDA) FRONT
OF J1ÆÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍPÍWÍAÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ OF
DRIVE Ô; :::::::: BOTTOM DRIVE
³³³³³³³³
³Terminator Power Ù³³³³³³À Enable T-Res
Ú´Terminator Power ÄÙ³³³³ÀÄ Start Delay (12 secs * ID)
³ Reserved ÄÄÙ³³ÀÄÄ Motor Start
³ Parity Disable ÄÄÄÙÀÄÄÄ Write Protect
³
³
³ ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿
ÀÄ´ Termination Power-source Table ³
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³ÍÍÍÍÍ....ÍÍÍÍÍ....ÍÍÍÍÍPWA edgeÍÍÍÍÍ ³
³ ³
³ 1 2 1 2 1 2 ³
³ ÖÄ· ÖÄ· ÖÄÄÄ· A Drive Supplies Bus ³
³ ºøºø øºøº ÓøÄø½ B Drive Supplies Own ³
³ Óø½ø øÓø½ ø ø C Bus Supplies Drive ³
³ A B C ³
ÀÄÄÄÄÄÄÄÄÄDefaultÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙ
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º FRONT VIEW º (ST-31055N)
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ÚÄÄ´Reserved. Shipped with cover installed.
³ ÀDo not remove. Do not install jumpers
TOP (HDA) ÕØÍÍ͸ 1
ÍÍPÍWÍAÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ͵::::³::::::ÆÍÍ
* BOTTOM ÔÍÍÍ;123456
³ J6 ³³³³³³
LED ÄÙ ³³³³³³
Remote LED Ù³³³³À ID 1
(pin-11 +5v) ³³³ÀÄ ID 2
Reserved ÄÁÙÀÄÄ ID 4
ST-31055N
FORMATTED CAPACITY (MB) __________________1060
AVERAGE SECTORS PER TRACK ________________123 rounded down
ACTUATOR TYPE ____________________________ROTARY VOICE COIL
TRACKS ___________________________________16,704
CYLINDERS ________________________________4,176 user
HEADS ______PHYSICAL______________________4
DISCS (3.5 in) ___________________________2
MEDIA TYPE _______________________________THIN FILM
RECORDING METHOD _________________________RLL (0,4,4)
INTERNAL TRANSFER RATE (mbits/sec)________44 to 66
EXTERNAL TRANSFER RATE (mbyte/sec) _______20 Sync
SPINDLE SPEED (RPM) ______________________5,411
AVERAGE LATENCY (mSEC) ___________________5.54
BUFFER ___________________________________512 KByte
Read Look-Ahead, Adaptive,
Multi-Segmented Cache
INTERFACE ________________________________Ultra-SCSI
ASA II
BYTES PER TRACK (avg) ____________________75,900
SECTORS PER DRIVE ________________________
TPI (TRACKS PER INCH) ____________________4800
BPI (BITS PER INCH) ______________________
AVERAGE ACCESS (ms) (read/write)__________10.4/11.4
With controller overhead
SINGLE TRACK SEEK (ms) ___________________2.7
MAX FULL SEEK (ms) _______________________20.4
MTBF (power-on hours) ____________________800,000
POWER REQUIREMENTS: +12V START-UP (amps) _1.8
+12V TYPICAL (amps) __0.34 idle
+5V START-UP (amps) __1.0
+5V TYPICAL (amps) ___0.32 idle
IDLE (watts) _________
LANDING ZONE (cyl) _______________________AUTO PARK
IBM AT DRIVE TYPE ________________________0 or NONE
Physical:
Height (inches/mm): 1/25.4
Width (inches/mm): 4.00/101.6
Depth (inches/mm): 5.75/146.1
Weight (lbs/kg): 1.5/0.68
Already low-level formatted at the factory with 5 spare sectors
per cylinder and 2 spare cylinder per unit.
ZBR = Zone Bit Recording = Variable sectors per track
Seagate reserves the right to change, without notice, product
offerings or specifications. (05/20/96)
A copy of this specification file may be obtained
by FTP at
ftp://ftp.seagate.com/techsuppt/scsi/st31055n.txt.
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