HC Series CORE Disk Drives INTERNATIONAL

Capacity, performance and reliability. Store large amounts of data quickly and efficiently with full confidence in its integ- rity. HC Series drives, available in 40 to 380MB capacities, are perfect for all appli- cations with large storage and high per- formance requirements. Ideal for 386 based network servers such as the IBM PS/2 Model 80.

Hardware for your sophisticated . Disk-intensive applications such as networking, CAD/CAM, CAE and desktop publishing will benefit from the ca- pacity and performance of the HC Series drives. With the HC Series, over 750MB can be mounted internally in one desktop while an additional 750MB can be installed in CORE' s Peripheral Storage System 217.

Advanced technology. ESDI interface, voice coil head positioning, highest grade media surfaces, dedicated servo surface, auto park and lock, and full-shock mount- ing guarantee fast, accurate and reliable drive performance for your entire system. An HC Series drive, with an average access time of 10 to 17ms, coupled with an HC Controller, allowing data transfer rates to exceed 900KB/second, produces the high- • 40, 90, 150,310 and 380MB • For use in IBM's PS/2-60 and 80, est performing drive systems on the market capacities PC-AT, compatible 286 based today. systems, Compaq's 386 and other • Average access times as low as 10 386 based systems Enhanced performance. Attached to the to 17 milliseconds exclusive HC Controller, the HC Series • DOS, XENIX and SCO XENIX 286 and drives can be formatted at a 1:1 interleave. • ESDI interface 386 compatible With a CORE HC Controller, data can be transferred to the processor five times faster • 50,000-hour MTBF • Novell certified for NetWare 2.1 and than with standard IBM PC-AT controllers compatible with NetWare 2.0 SFT, and more than 2 times faster than the IBM • Over 900KBIsecond data transfer IBM, 3Com, and other major LANs PS/2. rate; even higher with disk caching (included) • 3-year replacement warranty Unconditional warranty. Every CORE HC Series is backed by our full three-year, direct-replacement war- ranty. Specifications

ERFORMANCE HC40 HC90 HC150 HC310 HC380 FULL-HEIGHT HALF-HEIGHT FULL-HEIGHT FULL-HEIGHT FULL-HEIGHT ormatted Capacity (MB) 40.4 91.0 156.1 311.0 379.5 ransfer Rate (Mbits/sec) 10 10 10 10 10 .ccess Time (msec) Track-to-Track 4 4 4 3 3 .verage 10 16 16 16 16 .verage Latency (msec) 8.34 8.33 8.34 8.96 8.33

UNCTION AL otational Speed (rpm) 3597 3600 3597 3348 3600 CORE' s HC Controller increases system performance. ylinders 564 969 968 1582 1412 eads 4 5 15 9 12 To order contact: ectors/Track 35 35 35 35 32 CORE International ector Size (bytes) 512 512 512 512 512 7171 North Federal Highway iterface EDSI ESDI ESD1 ESDI ESDI Boca Raton, Florida 33487 407/997-6055 .ELIABILITY Fax: 407/997-6009 Telex: 315 809 CORE INTL DEBE ITBF (power-on hrs) 50,000 50,000 50,000 50,000 50,000 CORE International regional offices: reventative Maintenance none none none none none Eastern Regional Office: 70 Seaview Avenue C POWER REQUIREMENTS Stamford, CT 06902 203/357-1339 Ile (5v) (amps max) 0.8 1.3 0.8 1.6 0.8 Central Regional Office: (12V) (amps max) 1.4 1.7 1.4 2.5 2.0 Elk Grove, IL 60009 tart (5V) (amps max) 1.4 1.7 1.4 1.6 1.4 312/439-0511 (12V) (amps max) 4.5 4.5 4.5 5.0 4.5 Western Regional Office: 11835 West Olympic Blvd. #225 HYSICAL Los Angeles, CA 90064 213/312-8130 hock Limits Southern Regional Office: operating 7171 North Federal Highway shock (intermittent): not exceeding 2g Boca Raton, FL 33487 maximum duration: 10ms 407/997-6055 non-operating To order any CORE International product in shock (intermittent): not exceeding 2g Europe, contact: maximum duration: 10ms CORE International Europe ibration Limits 118, rue de Tocqueville operating 5-22 Hz @ 0.25mm displacement 75017 Paris, France 22-500 Hz @ 0.25 g 1/42.27.29.22 non-operating 5-22 Hz @ 0.50 mm displacement CORE International United Kingdom branch 22-500 Hz @ 1.00 g office: CORE International (U.K.) Ltd. IMENSIONS FULL-HEIGHT HALF-HEIGHT Kingswick House Sunninghill, Berkshire SL5 7BH :eight 3.25 inches 8.255 cm 1.625inches 4.13 cm 0990 23491 /idth 5.75 inches 14.605 cm 5.75 inches 14.605 cm or contact any CORE International authorized iepth 8.00 inches 20.32 cm 8.00 inches 20.57 cm distributor. /eight 3.8 pounds 1.72 kg 7.30 pounds 3.3 kg Products listed above are registered trademarks of their respec- tive companies. CORE International, CORE, COREfast and 7ecifications subject to change without notice. COREtape are registered trademarks of CORE International. Printed in the United States of America Copyright 1988 CORE International, Inc. P/N 703045 4/8 ATplus Series TM CORE® Disk Drives INTERNATIONAL

High speed, medium capacity The reliability of advanced technology. improved by providing the ability to The more information stored on a single easily remove and secure the entire unit. hard disk drives in full and half- device, the more important it is for the This portability can also facilitate height versions. device to be exceptionally reliable. All physically sharing the unit among ATplus series drives incorporate features multiple users. Moving the external drive to provide greater speed and capacity from one machine to another can be a while enhancing data integrity. For decided advantage in circumstances example, voice coil head positioning, where the purchase of multiple units is high-grade ferrous oxide media and a impractical. For machines with dedicated servo surface help ensure fast, insufficient power supplies, for example, error-free performance. In addition, IBM's PC, PS/2-30 and PS/2-50, CORE automatic Park and Lock and full shock International has a lightweight, external mounting help protect data. ATplus cabinet that houses the device and Series drives offer the longest current supplies the required power. All ATplus Mean Time Between Failure (MTBF) rate Series hard disk drives are compatible in the industry-50,000 hours, backed with popular half and full-size expansion by a three-year replacement warranty. units, including CORE International's PSS 217 Peripheral Storage System. Choices. ATplus hard disk drives are • Choice of capacities; available in both full-size and half-height 30, 40 and 72MB full-height models, providing maximum adaptability Fast data transfer. Controllers are 32 and 43MB half-height and flexibility for expansion and upgrade. interfaces providing communication between a drive and CPU. A slow • Access times as low as 21ms Full-size ATplus drives are available in 30, 40, and 72MB; half-heights offer 32 controller can adversely affect the data • Universal ST506 interface and 43MB capacities. transfer rate of even the fastest drive. CORE International's optional high- • Compatibility with popular Requiring but half the space, ATplus capacity controller enables ATplus Series , operating systems series half-height drives offer the same drives to perform at maximum. For and networks speed and reliability as their larger example, the average IBM PC/AT counterparts. The drives are designed for compatible 5MHz controller has an • High 50,000-hour MTBF; 3-year use in environments where small size, interleave of 3:1 and transfers data at warranty light weight and portability are beneficial. about 165KB/second. CORE International's high-capacity 10MHz • Easy installation For example, where expansion space is controller card supports an ST506 limited, such as with today's more interface to provide up to a full compact computers, replacing a 500KB/second transfer rate, with an Performance upgrade. CORE "standard" full-size drive with an ATplus interleave factor at the performance limit International's ATplus family of hard series half-height immediately provides of 1:1. This means faster data disk drives provides fast, reliable hard the additional performance and capacity management and less waiting for drives drive upgrades for medium capacity needed. In addition, there's room left for and network queues. Both ESDI and storage requirements from 30MB to a COREtape system, or even ST506 interfaces are available on the 72MB. another half-height drive if further expansion is required. same controller card. An RLL controller ATplus series hard disk drives are card is also available, enabling some users designed for users who need to expand ATplus half-height drives economize on to increase an ATplus Series hard drive's or upgrade an IBM PS/2; 386 AT-type size and weight by leaving such things as rated capacity and transfer rate by machine; IBM PC/AT; PC/XT or power supply and controller to the host approximately 50 percent. compatible while avoiding extensive system. So in addition to enhancing hardware investments. The superior internal expansion capabilities, the Overcoming limitations. ATplus Series capacity and speed of the ATplus series savings in weight and size can bring the hard drives are shipped with CORE over "standard" drives provide same conveniences to external International's GIGAfile software, which exceptional performance for applications expansion- with the added benefit of overcomes the 32MB DOS limitation. such as database environments, CAD, portability. For example, when the drive Files can be expanded across as many as CAM, desktop publishing, networking is mounted externally in a half-height eight physical devices, which the and other storage-intensive tasks. cabinet, security for sensitive data is

Specifications

computer "sees" as a single virtual PERFORMANCE AT32 AT30 AT40 AT43 AT72 device. Users can stretch files up to Half-Height Full-Height Full-Height Half-Height Full-Height 1,000MB -- one billion characters, to Formatted Capacity (MB) MFM 31.9 31.9 40.2 42.9 72.3 provide maximum flexibility for large RLL 48.7 48.7 61.5 65.7 107.0 databases, multiuser environments, Transfer Rate (Mbits/sec) 5 5 5 5 5 networking and other high-volume Access Time (msec) Track-to-Track 5 5 5 5 5 applications. Average 21 21 26 26 26 Average Latency (msec) 8.34 8.33 8.33 8.34 8.33 Unprecedented warranty. Reliability is TECHNICAL determined by the average time between Rotational Speed (rpm) 3597 3600 3600 3597 3600 failures for a device, rated as MTBF. The Cylinders 733 733 924 988 924 typical MTBF for hard disk drives is Heads 5 5 5 5 9 15,000 to 20,000 hours. Statistically, Sectors/Track 17 17 17 17 17 with an average use of 2,000 hours per Sector Size (bytes) 512 512 512 512 512 year, 4.1 out of every 10 drives with a Interface ST5061412 ST506/412 ST506/412 ST506/412 ST506/412 15,000-hour MTBF will fail during a POWER REQUIREMENTS four-year period. Drives with a 50.000- Idle (max amps) hour MTBF will have only 1 in 10 drives 5V 0.4 0.75 0.75 0.4 0.75 develop problems in the same period. 12V 1.5 2.0 2.0 1.5 2.0 The MTBF for all CORE International Start (max amps) ATplus drives is 50,000 hours. In 5V 1.0 1.3 1.3 1.0 1.3 12V 4.5 addition, the drives and your investment 4.5 4.5 4.5 4.5 are backed by a three-year warranty DIMENSIONS providing complete replacement. Height, inches 1.625 3.25 3.25 1.625 3.25 (cm) (4.128) (8.255) (8,255) (4.128) (8.255) Compatability. ATplus half and full- Width, inches 5.75 5.75 5.75 5.75 5.75 height hard disk drives are compatible (cm) (14.605) (14.605) (14.605) (14.605) (14.605) with the following: Depth. inches 8.00 8.00 8.00 8.00 8.00 (cm) • Computers and Peripherals: (20.32) (20.32) (20.32) (20.32) (20.32) Weight, pounds 3.80 6.70 6.70 3.80 6.70 - IBM XT (kg) (1.724) (3.039) (3.039) (1.724) (3.039) - IBM Personal Computer AT MAINTENANCE - IBM Personal System/2 (all models) MTBF (power-on hrs) 50,000 50.000 50,000 50.000 50,000 - 386 AT-type machines Preventative Maintenance none none none none none - Compaq computers Warranty 3 yrs. 3 yrs. 3 yrs. 3 yrs. 3 yrs. - CORE International PSS 217 Peripheral Storage System To order any CORE International In Europe, contact: - Compatibles to all the above product, contact: CORE International Europe • Operating systems: CORE International 118, rue de Tocqueville 7171 North Federal Highway 75017 Paris, France - DOS Boca Raton, FL 33487 1/42.27.29.22 -XENIX (both IBM and SCO) 407/997-6055 or contact any CORE International • Networks Authorized Dealer or Distributor. - IBM Token Ring and PC Network Stamford, CT: 203/357-1339 - Novell NetWare 2.1, 2.0A and higher Los Angeles, CA: 213/312-8130 - SFT I & II Chicago, IL: 312/439-0511 @ Copyright 1988 by CORE International - 3COM All rights reserved Sunninghill, Berkshire (U.K.) 0990 23491 Products listed above are registered trademarks of their -Other major LANs respected companies, CORE International. CORE, ATplus. PSS 217 Peripheral Storage System and GIGAfile are registered trademarks of CORE International. Specifications subject to change without notice. See your CORE International representative for complete Printed in the United States of America specifications and compatibility details. 2/88 PN 703034 OPTIMA Series - 1CORE' Disk Drives INTERNATIONAL

Economical high speed, medium The low price, two-year warranty and convenience of portability. When the greater speed of the OPTIMA series over drive is installed externally in a half- capacity hard disk drives. "standard" drives provide exceptional height cabinet, for example. security for performance and value for all sensitive data is improved by providing applications. the ability to easily remove and secure the entire unit. This portability can also Reliability. All OPTIMA series drives facilitate physically sharing the unit incorporate the same quality among multiple users. Moving the as other CORE International drives, external drive from one machine to enabling the OPTIMA series to deliver another can be a decided advantage in exceptional speed and capacity while circumstances where the purchase of enhancing data integrity. Voice coil head multiple units is impractical. positioning, high-grade ferrous oxide media and a dedicated servo surface help Speed. "Controllers" provide ensure fast, error-free performance. communication between a drive and Automatic Park and Lock and full shock CPU. A slow controller can adversely mounting help protect data. With affect the data transfer rate of even the OPTIMA series drives, low price doesn't fastest drive. Although not required for mean low reliability. machines with existing controllers, Versatility. OPTIMA hard disk drives are CORE International's optional high- available in both half-height and full-size capacity controller enables OPTIMA models, providing maximum adaptability series drives to perform at maximum. • Economical mass storage for present and future expansion. Half- For example, the average IBM PC/AT height OPTIMA drives, designed for use compatible 5MHz controller has an • High reliability— 2-year warranty in environments where small size, light interleave of 3:1 and transfers data at about 165KB/second. CORE • weight and portability are beneficial, are 35,000-hour MTBF available in 30 and 40MB capacities. The International's high-capacity 10MHz • Choice of capacities: full-size drive is available as a 70MB controller card supports an ST506 30 and 40MB half-heights model with an excellent price/capacity interface to provide up to a full ratio. 500KB/second transfer rate, with an 70MB full-height interleave factor at the performance limit • Low 26ms average access time OPTIMA half-height drives provide of 1:1. This means faster data particular value where expansion space is management and less waiting. Both ESDI • Universal ST506 interface limited, such as with today's more and ST506 interfaces are available on the compact computers. Replacing a Compatibility with popular same controller card. An RLL controller • "standard" full-height drive with an card is also available, enabling some users computers, operating systems OPTIMA series half-height immediately to increase an OPTIMA Series hard and networks brings additional performance and drive's rated capacity and transfer rate by • Easy installation- internal or external capacity. There's also room left for a approximately 50 percent. COREtape backup system, or even • COREfast high-speed backup another half-height drive if further Overcoming limitations. OPTIMA series software included expansion is required. This helps users hard drives are shipped with CORE pace expansion with budget. In addition, International's GIGAfile software, which Performance and price. CORE for machines with insufficient power overcomes the 32MB DOS limitation. International's OPTIMA hard disk drives supplies, such as IBM's PC. PS/2-30 and Files can be expanded across as many as provide economical, reliable upgrades and PS/2-50, CORE International provides a eight physical devices, which the replacements for medium capacity mass small external unit that both houses the computer "sees" as a single virtual storage requirements from 30MB to drive and provides the required power. device. Users can stretch files up to 1,000MB -- 70MB. one billion characters, All OPTIMA series hard disk drives are providing maximum flexibility for large OPTIMA series hard disk drives are compatible with popular half and full- databases, multiuser environments, designed for users who need high size expansion units, including CORE networking and other high-volume reliability with limited investment in International's PSS 217 Peripheral applications. upgrading an IBM PS/2; 386 AT-type Storage System. The savings in weight machine; IBM PC/AT; XT or compatible. and size can bring the additional