Apple-Hard-Disks-20Sc-40Sc-80Sc

App le Hard Disks: 20SC, 40SC, BOSC •®

<:. 40SC

Overview Features Bene.fits Now Macintosh'", Apple® Ile, or ..,. 20, 40, or 80 megabytes of storage ..,. Provides space for data-intensive files, Apple IIGs'" personal computer large documents, and sophisticated applications. owners can boost disk storage ..,. Lets you build a powerfulAppleShare' " capacity froma choice of high system that can access up to 80 mega performance external hard disks. bytes of information (when used with Providing 20, 40, or 80 mega Apple's new file server software). ..,. Makes it easy to work in the AT&T bytes of storage capacity, Apple UNIX® environment (when you use the Hard Disks are ideally suited to Apple Hard Disk 80SC). the growing requirements of business and professional users ..,. Fast data access: ..,. Finds data significantly faster than who want to store multiple appli -30 milliseconds with the 40SC the 3.5-inch floppydriv es. and 80SC Hard Disks cations programs and data files -85 milliseconds with the 20SC in one convenient location. Besides offering ample storage ..,. Industry-standard Small Computer ..,. Provides fasterdata transmission than (10,000 pages with the 20-mega System Interface (SCSI) a serial interface. ..,. Allows expansion with additional hard byte disk), Apple Hard Disks let disks, tape backup systems, or other SCSI you access data up to six times peripherals. fasterthan 3.5-inch floppy-disk ..,. Provides connection to the Apple Tape drives. Backup 40SC for efficientfile backup and restoration . ..,. Assures a growth path. Apple Hard Disk 20SC

SystemRequirements To use an Apple Hard Disk To use an Apple Hard Disk 20SC with a Macintosh person 20SC with an Apple Ile or IIGS, al computer, you must have: you must have: • Apple SCSI System Cable • Apple II SCSI Interface Card Apple SCSI Cable Terminator • Apple SCSI System Cable > • Apple SCSI Cable Terminator

ProductDetails • SCSIExpansion tional SCSI devices to an Apple SCSI expansion lets you con Ile or Apple IIGS, or as many nect as many as three addi- as six to a Macintosh.

TechnicalSpecifications Recording Media Two double-sided rigid fixed disks with two dual read/write heads

Capacity Data capacity: 20 megabytes (formatted) Data surfaces: 4 Heads/Surfaces: 1 Block size: 512 Total disk blocks: 39,360 Sectors/Tracks: 32

Characteristics Average seek time: 85 milliseconds Transfer rate: Macintosh Plus: 265,000 bytes per second Macintosh SE: 660,000 bytes per second Macintosh II: 937,000 bytes per second: Rotational speed: 2,744 rpm Startup time: 15 seconds Spin-down time: 25 seconds

Interface Connects directly to the Mac Connects to the Apple Ile or intosh Plus, Macintosh SE, or Apple IIGS via the expansion Macintosh II via the external port, using the Apple II SCSI SCSI DB-25 connector. Interface Card.

Electrical Line voltage: 85 to 270 volts AC requirements Frequency: 47 to 64 hertz Maximum power: 30 watts

Environmental Operating temperature: 50° to 104° F (10° to 40° C) requirements Storage temperature: 32° to 122° F (0° to 50° C) Relative humidity: 20% to 80% (noncondensing) Altitude: 0 to 10,000 ft.(O to 3,048 m)

Sizeand weight Height: 3.1 in. (78.Smm) Depth: 10.5 in. (266 mm) Width: 9.7 in. (246mm) We ight: 9 lbs. ( 4kg)

OrderingInformation Apple Harddisk 20SC With yourorderyou'll receive: Apple SCSISystem Cable Order No. M2620 Apple Hard Disk 20SC Order No. M0206 •JI>- Owner's Guide Apple CableTerminator Setup Disk Order No. M0209 JI>- Power cord Applen SCSIInterface Card JI>- Limitedwarranty statement Order No. A2B2087 • Apple Hard Disk 40SC

SystemRequirements See the Apple Hard Disk 20SC for the Apple Hard Disk 40SC system requirements.

ProductDetails ProDos Future ProDos updates will SCSIExpansion ProDos111- 1.1 can only access allow full access to the 40 SCSIIll- expansion lets you con 32 megabytes of storage, megabyte capacity nect as many as three addi regardless od drive capacity tional SCSI devices to an Apple Ile or Apple IIGS or as many as six to a Macintosh.

Technical Specifications RecordingMedia Two double-sided rigid fixed disks with two dual read/write heads

Capacity Data capacity: 40 megabytes (formatted) Data surfaces: 4 Heads/Surfaces: 1 Block size: 512 Total disk blocks: 78,246 Sectors/Tracks: 32

Characteristics Average seek time: 30 milliseconds Transfer rate: Macintosh Plus: 265,000 bytes per second Macintosh SE: 660,000 bytes per second Macintosh II: 937,000 bytes per second: Rotational speed: 3,662 rpm Startup time: 13 seconds Spin-down time: 18 seconds

Interface Connects directly to the Mac Connects to the Apple Ile or intosh Plus, Macintosh SE, or Apple UGS via the expansion Macintosh II via the external port, using the Apple II SCSI SCSI DB-25 connector. Interface Card.

Electrical Line voltage: 85 to 270 volts AC requirements Frequency: 47 to 64 hertz Maximum power: 60 watts

Environmental Operating temperature: 50° to 104° F (10° to 40° C) requirements Storage temperature: 32° to 122° F (0° to 50° C) Relative humidity: 20% to 800/o(noncondensing) Altitude: 0 to 10,000 ft.(O to 3,048 m)

Size and weight Height: 3.1 in. (78.Smm) Depth: 10.S in. (266 mm) Width: 9.7 in.(246mm) We ight: 9 lbs. (4kg)

OrderingInf ormation Apple Hard disk 40SC With your order you'll receive: Apple SCSISystem Cable Order No. M2644 Ill- Apple Hard Disk 40SC Order No. M02o6 Ill- Owner's Guide Apple CableTerminator Setup Disk Order No. M0209 Ill-111- Power cord ApplellSCSI Interface Card .,,. Limited warranty statement Order No. A2B2087 App le Ha rd Disk 80SC

SystemRequirements See the Apple Hard Disk 20SC forthe Apple Hard Disk 80SC system requirements.

ProductDetails • ProDos allow full access to the 40 tional SCSI devices to an Apple ProDos 1.1 can only access megabyte capacity Ile or Apple IIGS or as many as 32 megabytes of storage, • SCSI Expansion six to a Macintosh. regardless od drive capacity SCSI expansion lets you con Future ProDos updates will nect as amny as three addi-

TechnicalSpecifications Recording Media Three double-sided rigid fixed disks with two dual read/write heads

Capacity Data capacity: 80 megabytes (formatted) Data surfaces: 6 Heads/Surfaces: 1 Block size: 512 Total disk blocks: 156,370 Sectors/Tracks: 32

Electrical Line voltage: 85 to 270 volts AC requirements Frequency: 47 to 64 hertz Maximum power: 60 watts

Size andweight Height: 3.1 in. (78.Smm) Depth: 10.5 in. (266 mm) Width: 9.7 in. (246mm) Weight: 9 lbs. ( 4kg)

OrderingInformation Apple Hard diskSOSC With your orderyou'll receive: Apple SCSI System Cable Order No. M2688 • Apple Hard Disk 80SC Order No. M0206 Owner's Guide Apple Cable Terminator • Setup Disk Order No. M0209 • Power cord Applen SCSIInterface Card • Limited warranty statement Order No. A2B2087

Apple Computer, Inc. 20525 Mariani Avenue © 1987 Apple Computer, Inc. Apple and theApple logo are registered trademarks of Apple Computer. Inc. AppleShare, Apple and Macintosh are trademarks of Apple Computer, Inc. registered trademark Cupertino, CA llGS, UN1J( is a 95014 of AT& T lnforrnation Systems. July 1987. Proclua specifications are subjea to change without notice. (408) 996-1010 M2234 TIX: 171-576