The Terabyte Tapes

Modern science and e-commerce generate data on an unprecedented scale. Backup is more critical than ever - and magnetic tape is still the medium of choice.

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Options for Backing Up Terabyte Data
Format Major Vendors Price* Media Type Capacity Native/

Compressed

Media

Cost

Transfer Speed MB/sec. Reliability (mean time

between failures)

Special Features

Super DLT

Quantum

> $6,000

.500 linear

110GB/220GB

$150/cartridge, $1.35/GB

11

250,000 hours

Optical server,

bulk-erasable, infrared

external diagnostics;

due next quarter

AIT-2

Sony

> $5,000

8mm helical scan

50GB/100GB

$90/cartridge, $1.80/GB

5

250,000 hours

**Memory in cartridge,

automatic head cleaning

Mammoth2

Exabyte

> $4,500

8mm helical scan

60MB/120MB

$95/cartridge, $1.60/GB

12

300,000 hours

Capacities to 90TB,

automatic head cleaning

LTO, Ultrium

(high capacity)

HP, IBM, Seagate

$5,500

.500 linear

100GB/200GB

$140/cartridge, $1.40/GB

15

250,000 hours

**Memory in cartridge,

capacities to 240TB

by this year's fourth quarter

LTO, Accellis

(fast access)

HP, IBM, Seagate

Not available

8mm linear

25GB/50GB

Not

available

20

300,000 hours

Available in the third

quarter of this year

VXA AutoPak

Ecrix

> $4,500

8mm single drive + 15GB to 33 GB

495GB/990GB

$77/cartridge, $2.33/GB

6 per drive

300,000 hours

Variable speed, discrete

packet recording format

DVD-RAM

Panasonic, Hitachi

$25,000

Four drives

2.3TB/4.6TB

$20 per disc, $2.10/GB

5.4 per drive

250,000 hours

100-year life, random

-access discs, zero

head-crash liability

*Excludes backup software, which ranges from $400 to $4,000, depending on operating system, number of licenses and availability of centralized/remote management features.

**Memory in cartridge embeds information about the tape contents, its file directory, number of times used, etc., to improve reliability and reduce load time.

Copyright © 2001 IDG Communications, Inc.

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