Ampex DST-814 Brochure

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DST 814

25.6TB Quad Automated Cartridge Library

• DD-2 19-mm helical scan tape format

• 25.6 terabyte capacity in only 21 square feet of floor space

• Sustained transfer rate of 20MB/sec per drive

• Burst transfer rate of 40MB/sec per drive

• 2.7 GB/sec search speed - 300 in/sec

• Smart DD-2 quad density tape format

with multiple system zones

• Volume tape partitioning

• Three levels of Reed-Solomon error correction

• Read-after-write verification and automatic rewrite

• Up to four DST drives, each with independent Ultra-SCSI interfaces

• Aggregate sustained data rate up to 80MB/second

• 16 seconds average access time to any file

• Read compatible with ER 90 “D2C”

cartridges and with single and double density DST/DIS cartridges

The DST 814 quad density library is unrivaled by any other library system in the market. The fast robotic cartridge exchange operation of less than 7 seconds, combined with a search rate of 2.7 GB/sec, delivers an average access time of less than 16 seconds for any file within the entire 25.6 terabyte library. Each drive has its own UltraSCSI data path, producing an aggregate transfer rate of up to 80MB/second for the library. The DST 814 library holds 256 100GB DST tape cartridges, putting a total storage capacity of 25.6 terabytes online in only 21 square feet of floor space. By using the cartridge partitioning feature in the DD-2 tape format, the library storage capacity can appear as thousands of logical volumes to the host server.

The DST 814 library delivers disk-like performance and huge capacity that makes it the subsystem of choice for applications requiring rapid storage and retrieval. Combined with storage management software, the DST 814 library can enable data mining applications, allow building of data warehouses with high accessibility, reduce the cost associated with adding more disk, and backup an entire database in a few hours.

Ampex works with leading software companies to provide backup and recovery, archiving and HSM applications for the DST 814 library.

The DST814 quad density automated cartridge library system is designed with the performance and flexibility necessary to meet the growing requirements for fast access to massive amounts of data, spanning everything from graphic and imaging to scientific simulations and commercial data processing. Applications include data warehousing, hierarchical storage management, online archive and database or file system backup in large computing environments.

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Performance

Transfer rate 80MB/second sustained (four drives at 20MB/sec) Drive search speed 2.7GB/second Cartridge exchanges 600 per hour (one dismount and one mount) Average access time Less than 16 seconds

Capacity

Number of cartridges 256 100GB DST cartridges Total storage 25.6 terabytes Storage density 1.22TB/sq. ft. (25.6TB/21 sq. ft.)

Interface

Robotic Dual-ported Ultra-SCSI (16 bit differential and 8 bit single-ended) Drive Dual-ported Ultra-SCSI (16 bit differential)

Optional telecommunications/instrumentation port (replaces one Ultra-SCSI port) includes 8-bit parallel data port and serial, ANSI X3T9.3 compliant port

Tape Format DD-2 19-mm quad density helical scan tape format Error Rate 1 in 1017bits read Physical Characteristics

Number of drives One to four high-performance DST drives I/O bins Eight user import/export bins Size 82.5"H x 90.75"W x 37.75"D with enclosure

(209.6 cm x 230.5 cm x 95.9 cm)

80.5"H x 87.25"W x 33.5"D without enclosure

(204.5 cm x 221.6 cm x 85.1 cm) Weight 2500 lbs. (1135 kg) (with tape) Floor loading 110 lbs./sq. ft.

Operating Environment

Temperature range 12–27°C Humidity range 30–70%, non-condensing

Power Requirements 190–250 VAC, 20 A

50/60 Hz single phase

Power consumption <3.2 KW peak with four drives

Device Drivers Supports all major UNIX and NT devices

DST 814 Specifications

All capacities without data compression Specifications subject to change without notice or obligation All trademarks and service marks are the property of their respective holders

500 Broadway, Redwood City, California 94063-3199 Telephone: 1-800-752-7590 Fax: 650-367-3850 Web: http://www.ampexdata.com Email: sales@ampexdata.com