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Power Computing provided the information in this article and it was deemed accurate as of 14 November 1997. Apple Computer, Inc. is not responsible for its content. This article is being provided as is and will not be updated in the future.
DISCUSSION ST-31276A, Medalist 1276 AT (Lapaz CFS1276A) +-----------+ | REAR VIEW | +-----------+ J2 40 pin I/O Cable Connection | +--------- ---------+-----1-/---------\ TOP (HDA) -+::::::::::oe::::::::1| : : : | 0 0 0 0 |-- +----------|---------+-|-|-|-+-5-G-G-12+ BOTTOM | | | | pin-20 removed -+ | | +-- Reserved | +---- Slave Present (when Master ON) | +---- Cable Select (when Slave OFF) +------ Master ON, Slave OFF ST-31276A Medalist 1276 AT (Lapaz CFS1276A) FORMATTED CAPACITY _______________________1280.95 ACTUATOR TYPE ____________________________VOICE COIL CYLINDERS __PHYSICAL______________________4893 HEADS ______PHYSICAL______________________4 DISCS (3.5 in) ___________________________2 MEDIA TYPE _______________________________THIN FILM HEAD TYPE ________________________________THIN FILM RECORDING METHOD _________________________ZBR RLL (1,7) INTERNAL TRANSFER RATE (Mbits/sec) _______33.6 to 67.2 EXTERNAL TRANSFER RATE (Mbytes/sec) ______up to 16.6 PIO MODE _________________________________4 DMA SUPPORT ______________________________EISA Type B SPINDLE SPEED (RPM) ______________________4500 AVERAGE LATENCY (mSEC) ___________________6.67 BUFFER ___________________________________64K Read/Write Multiple, Read Look-Ahead, Multi-Segmented INTERFACE ________________________________ATA SECTORS PER DRIVE (LBA mode) _____________2,501,856 TPI (TRACKS PER INCH) ____________________4973 BPI (KBITS PER INCH) _____________________88.4 AVERAGE ACCESS (ms) ______________________12.5 SINGLE TRACK SEEK (ms) ___________________3 MAX FULL SEEK (ms) _______________________24 MTBF (power-on hours) Office _____________300,000 SHOCK (G's): operating (Read/Write) __________5 abnormal ________________________ nonoperating ____________________75 ACOUSTICS (bels) (typ/max) _______________38/ POWER DISSIPATION (watts) ________________ POWER REQUIREMENTS: +12V START-UP (amps) _1.2 POWER MANAGEMENT (Watts): ACTIVE _______________4.6 IDLE _________________3.5 STANDBY ______________1.0 WRITE PRECOMP (cyl) ______________________N/A REDUCED WRITE CURRENT (cyl) ______________N/A LANDING ZONE (cyl) _______________________AUTO IBM AT DRIVE TYPE ________________________* Physical: Height (inches/mm): 1.00/25.4 Width (inches/mm): 4.00/101.6 Depth (inches/mm): 5.75/146.1 Weight (lbs/kg): 1.3/0.59 * MAY REQUIRE FORMATTING AND PARTITIONING SOFTWARE. ALSO, CHECK TO SEE IF YOUR CMOS SETUP HAS A "CUSTOM" OR "USER DEFINABLE" DRIVE TYPE AVAILABLE. (see below) Possible translations: This translation is generally acceptable, as is, for non-DOS operating systems: 2482 cyl, 16 heads, 63 sectors = 1,280,950,272 DOS operating systems may require a translation that uses larger values for the CMOS head parameter which lowers cylinders below 1024: 620 cyl, 64 heads, 63 sectors = 1,279,918,080 Other FULL-CAPACITY solutions for DOS operating systems include third-party drive preparation software, system BIOS which supports LBA mode or bios driven host adapters. Otherwise, capacity may be limited to: 1024 cyl, 16 heads, 63 sectors = 528,482,304 Note: A "custom" or "user-definded" CMOS drivetype may ask for a numerical value for the Write Precompensation cylinder and for the Landing Zone cylinder. A basic rule-of-thumb for drive models that do not require the old Write Precomp technique or a Landing Zone because they are Auto-Parking is to add 1 to the cylinder value being used. As an example: If cylinders equaled 820, then both Write Precomp and Landing Zone would be entered as 821. Some BIOS will convert this to 65535 or -1, which are functionally equivalent to "none (not used)". Already low-level formatted at the factory. Since a User-definable or Custom translation geometry may be used, it is imperative that the values be written down and kept with your permanent records for retrieval in the event of CMOS battery failure. Seagate reserves the right to change, without notice, product offerings or specifications. (09/09/96) Machines Affected: All |
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| Document Information | |
| Product Area: | Computers |
| Category: | Power Computing Corp. |
| Sub Category: | Specifications |
| Keywords: | kpowercc |
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