163 lines
6.9 KiB
Plaintext
163 lines
6.9 KiB
Plaintext
SEAGATE TECHNOLOGY, INC.
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Customer Technical Support FAX Network +1 408 438-8137
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Customer Technical Support Bulletin Boards (300-9600, 8-N-1)
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ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÂÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿
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³ United States +1 408 438-8771 ³ United Kingdom +44 628 478011 ³
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ÃÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´
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³ Germany +49 89 140-9331 ³ Singapore +65 227-2217 ³
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ÀÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÁÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙ
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(C)opyright 1994
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ST-3780A (Medalist 720)
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ÉÍÍÍÍÍÍÍÍÍÍÍ»
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º REAR VIEW º
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ÈÍÍÍÍÍÍÍÍÍÍͼ
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40 pin I/O Cable Connection J1
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2o o ³
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1o o ÕÍÍÍÍÍÍÍÍÍ ÍÍÍÍÍÍÍÍ͸ /ÄÄÄÄÄÄÄÄÄ\ TOP (HDA)
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ÍØÍØÍ͵::::::::::ú::::::::1Æͳ 0 0 0 0 ³ÍÍ
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³ ³ ÔÍÍÍÍÍÍÍÍÍͳÍÍÍÍÍÍÍÍ; ÀÄ5ÄGÄGÄ12Ù BOTTOM
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³ ³ ³
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³ ³ ÀÄÄÄ pin-20 removed
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³ ³
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OFF OFF -- One drive only
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ON OFF -- Drive is slave
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OFF ON -- Drive is Master with slave present
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ON ON -- Cable Select (must also jumper pins 6 and 8 on J8)
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SPARE -- stored on pins 1-3
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ST-3780A
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ÉÍÍÍÍÍÍÍÍÍÍÍÍÍÍ»
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º Front View º
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ÈÍÍÍÍÍÍÍÍÍÍÍÍÍͼ
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ÚÄÄÄÄÄÄÄÄÄÄÄÄÄ Spare - as shipped
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³ ÚÄÄÄÄÄÄÄÄ Cable Select pins 6-8
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(TOP) ³ ³ ÚÄÄÄÄ Reserved
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³ ³ ³ ÚÄ Remote LED 13-, 14+
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³ ³ ÚÁ¿ ³
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J8 o o oÁo o o o14
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Option Block ÍÍÍÍÍÍÍÍ1o o o o o o ÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍPWAÍÍÍÍÍÍÍÍÍÍ
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³
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(BOTTOM) ÀÄÄ pin 3 missing
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Cable Select also requires Slave and Slave Present jumpers ON.
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ST-3780A
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ÉÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ»
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º RIGHT SIDE VIEW º
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ÈÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍͼ
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ÚÄÄÄ J6 Dual Drive emulation pins 1-2 AND pins 3-4
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³ (spare jumper stored on pins 1-3, as shipped)
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2o o
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BACK Õ͸ 1o o TOP (HDA) FRONT
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OF ÆÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍPÍWÍAÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ OF
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DRIVE Ô; BOTTOM DRIVE
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Note: If the Dual Drive Emulation jumper is used, then TWO CMOS drive
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types will be required and only ONE drive per cable is allowed.
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ST-3780A
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Medalist 720
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UNFORMATTED CAPACITY _____________________
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FORMATTED CAPACITY (xx SECTORS) __________722
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ACTUATOR TYPE ____________________________VOICE COIL
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CYLINDERS __PHYSICAL______________________3,876
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HEADS ______PHYSICAL______________________4
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DISCS (3.5 in) ___________________________2
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MEDIA TYPE _______________________________THIN FILM
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HEAD TYPE ________________________________THIN FILM
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RECORDING METHOD _________________________ZBR RLL (1,7)
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INTERNAL TRANSFER RATE (Mbits/sec) _______27.9 to 47.24
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EXTERNAL TRANSFER RATE (Mbytes/sec) ______up to 16.6
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PIO MODE _________________________________4
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DMA SUPPORT ______________________________EISA Type B
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SPINDLE SPEED (RPM) ______________________4,500
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AVERAGE LATENCY (mSEC) ___________________6.67
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BUFFER ___________________________________256 Kbyte SeaCache
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Read/Write Multiple, Read Look-Ahead,
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Multi-Segmented
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INTERFACE ________________________________AT
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SECTORS PER DRIVE ________________________1,410,864
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TPI (TRACKS PER INCH) ____________________4,250
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BPI (BITS PER INCH) ______________________70,101
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AVERAGE ACCESS (ms) (read/write) _________12/14
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SINGLE TRACK SEEK (ms) ___________________3.5
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MAX FULL SEEK (ms) _______________________25
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MTBF (power-on hours) Office _____________300,000
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SHOCK (G's):
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operating (Read/Write) __________2
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nonoperating ____________________75
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ACOUSTICS (typ/max dBA) __________________30/36
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POWER DISSIPATION (watts) ________________
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POWER REQUIREMENTS: +12V START-UP (amps) _1.9
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POWER MANAGEMENT (Watts):
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ACTIVE _______________6.6
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IDLE _________________2.75
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STANDBY ______________1
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WRITE PRECOMP (cyl) ______________________N/A
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REDUCED WRITE CURRENT (cyl) ______________N/A
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LANDING ZONE (cyl) _______________________AUTO
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IBM AT DRIVE TYPE ________________________*
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Physical:
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Height (inches/mm): 1/25.4
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Width (inches/mm): 4.02/102.1
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Depth (inches/mm): 5.77/146.6
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Weight (lbs/kg): 1.5/0.68
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* MAY REQUIRE FORMATTING AND PARTITIONING SOFTWARE. ALSO, CHECK TO
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SEE IF YOUR CMOS SETUP HAS A "CUSTOM" OR "USER DEFINABLE" DRIVE TYPE
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AVAILABLE. (see below)
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Possible translations:
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This translation is generally acceptable, as
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is, for non-DOS operating systems:
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1399 cyl, 16 heads, 63 sectors = 722,018,304
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DOS operating systems may require a system bios
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that accepts or translates larger values for the
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CMOS head parameter which lowers cylinders below
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1024:
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699 cyl, 32 heads, 63 sectors = 721,502,208
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Other FULL-CAPACITY solutions for DOS operating
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systems include third-party drive preparation
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software, system BIOS which supports LBA mode
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or bios driven host adapters. Otherwise,
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capacity may be limited to:
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699 cyl, 16 heads, 63 sectors = 360,751,104 (Master)
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699 cyl, 16 heads, 63 sectors = 360,751,104 (Slave see Dual
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Drive emulation jumper)
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Note: A "custom" or "user-definded" CMOS drivetype may ask for a
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numerical value for the Write Precompensation cylinder and for the
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Landing Zone cylinder. A basic rule-of-thumb for drive models that do
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not require the old Write Precomp technique or a Landing Zone because
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they are Auto-Parking is to add 1 to the cylinder value being used. As
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an example: If cylinders equaled 820, then both Write Precomp and
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Landing Zone would be entered as 821. Some BIOS will convert this to
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65535 or -1, which are functionally equivalent to "none (not used)".
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PHYSICAL/LOGICAL equivalent to NATIVE/TRANSLATION
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ZBR = Zone Bit Recording = Variable sectors per track
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Already low-level formatted at the factory.
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Since a User-definable or Custom translation geometry may be used, it
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is imperative that the values be written down and kept with your
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permanent records for retrieval in the event of CMOS battery failure.
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Seagate reserves the right to change, without notice, product
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offerings or specifications. (08/17/94)
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