Quantum DLTtape DLT 2000, Руководство пользователя

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THE EVOLVING TAPE STORAGE MARKET 1.2
With the projected amount of data that needs to be backed up climb-
ing at a rapid rate, and the projected growth in tape drive units shipped
staying relatively flat, each of those backup tape drive units must deliv-
er more capacity than ever before. Analysts project that there may be
the potential for a melt-down if the backup technology does not keep
up with that sharply rising demand curve. The continual evolution of
DLTtape technology and the dramatic increase in capacity and perfor-
mance delivered by Super DLTtape technology are a direct response to
this need. What factors are driving this rising demand for backup
capacity? Let’s start with computer systems trends.
From Mainframe to Client/Server
The deployment of client/server systems is accelerating. From 1994
to 1996, the percentage of organizations that said they were actually
using client/server systems grew from 25 to 44 percent. Today,
client/server is the dominant mainstream approach to enterprise
0
500
1,500
1,000
2,000
2,500
3,000
3,500
4,000
4,500
1999 2000 2001 2002 2003 2004
Centralized
Network
Centralized
Administration
Distributed
Workgroups
SOHO
Networks
Worldwide Server Capacity (in Petabytes)
Source: Strategic Research Corp., Network Demographics, 2000
Figure 1-1 Worldwide Server Capacity
is one measure of data to be
backed up. The figure is climbing at a much steeper rate than the rate of
tape shipments. Backup capacity must increase to match increased storage
demands in this and other categories.