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• Separate storage for control and configuration tables
• Mirrored cache instead of single image cache
2
• Offered by Hitachi Data Systems, the leading supplier of storage systems for
geographically GDPS
™
production sites
• NanoCopy
™
technology which offers a scheme for disaster recovery
• High-availability, custom-designed disk drives
Other Information Sources Available from Hitachi Data Systems
Additional information on the enterprise storage market, including an in-depth
overview of the technically advanced and unsurpassed software solutions available from
Hitachi Data Systems, is available in the companion publication, the Hitachi Freedom
Storage Software Solutions Guide. This document is downloadable in PDF format from
www.hds.com. The report contains expert guidelines regarding industry-leading software
solutions suites from Hitachi Data Systems for storage management, business continuity,
performance enhancement, backup and recovery, and data transfer. It also compares the
Hitachi Data Systems solutions to the major competitive software solutions and drills down
into specifics.
Since enterprise storage features are increasingly required in the modular storage
market, additional information on the Hitachi Freedom Storage Thunder 9500 V
™
Series
systems is available in a separate report entitled the Hitachi Freedom Storage Thunder
9500 V Series Architecture Guide. The Thunder 9500 V Series are modular (midrange)
RAID storage systems designed for use in heterogeneous open systems computing
environments and targeted at the e-commerce, Web serving, and data warehousing
applications. The Thunder 9500 V Series storage systems are the only modular products
that truly deliver large, enterprise-level features with a midrange package and price.
If further information is required, Hitachi Data Systems representatives can provide
specialized presentations, reports, and expert knowledge on the topics contained in this
series of reports.
Reduced TCO
Bandwidth contention in a shared-bus architecture serves as a limit to data hyper-
consolidation initiatives and limits the enterprise’s ability to reduce TCO. Figure 4
illustrates that a recent survey showed that actual deployed average capacity of Lightning
9980V systems and Lightning 9970V systems exceeded that of fixed-bus systems by a factor
of 2.5x. Since the Lightning 9980V systems and Lightning 9970V systems nearly double
internal bandwidth of our earlier enterprise-level systems, it is clear that obstacles to massive
consolidation projects will be removed. This is especially true when the Hitachi industry-
unique “virtual” Fibre Channel port feature of the Lightning 9900 V Series is considered.
The major objective of massive consolidation is to keep up with exploding storage
capacities without increasing head count and deploying staff to address the application
backlog. With the Lightning 9900 V Series, TCO can be reduced not only through
virtualization but also by:
• Reduced network complexity with fewer switches, connections
• Simplified and automated management tools and software
• Lower licensing, maintenance charges, and environmental costs
5
In t ro d u c t i o n
2
Some competitive products do n o t have dual cache like the Hitachi Freedom Storage Lightning
9900 V Series. If there is an unrecoverable error in cache, there is no duplicate backup copy. With
these products there is an increased risk of lost data, especially if the loss occurs in the hard w a re
status area. The Lightning 9900 V Series does not have this problem since all status areas and write
data are duplexed. Although a minor concern to some given the low probability of occurrence, the
thought of data loss is never comforting to enterprise executives charged with 24/7 operations.
Other reports,
presentations, and
expert knowledge are
also available.