Veritas Storage Foundation Intelligent Storage Provisioning 5.0.1 Solutions Guide, HP-UX 11i v3, First Edition, November 2009
Table 3-1
Storage tier cost and benefit
ApplicationBenefitCost
Mission-critical business data to which employees
and customers need frequent, fast, reliable access.
These files are stored on high-end storage arrays
with fast, reliable network connections.
HighHigh
Data that is not directly related to an enterprise’s
business, but which nevertheless must be retained.
Examples are compliance reports and employee HR
records. These files are stored on high-end arrays,
but performance is not a priority.
LowHigh
Archive data, such as historical customer and
account records, which needs to be accessible but
is not used heavily. These files are stored in
mid-range to low-end storage arrays with fast,
reliable network connections.
HighLow
Data that has little impact on an enterprise’s
business. These files are stored on low-cost media,
such as tape, with little consideration given to
performance.
LowLow
The maximum benefit to business, in terms of efficiency and cost savings, is
achieved when QoSS decisions are based on the proper classification of storage.
When an enterprise analyzes its data storage patterns, often as much as 75 percent
of data that is residing on premium storage may be found to be eligible for
movement to a lower tier.
To make the best use of tiered storage, the Veritas Storage Foundation Web GUI
provides a mechanism that allows you to manage data at the file level. The
movement of files between tiers is performed automatically according to
predefined policies. Unlike those Hierarchical Storage Management (HSM)
solutions that use the data management API (DMAPI), this does not incur a
“time-to-first-byte” latency overhead when users or applications access relocated
files that have been moved to secondary storage.
The Veritas Storage Foundation software allows you to define and update policies
throughout the network rather than on a host-by-host basis, and also simplifies
the process of moving data between storage tiers.
Tiered storage solutions
About tiered storage solutions
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