Sun Microsystems StorEdge 3000 Series, Best Practices Manual

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22 Sun StorEdge 3000 Family Best Practices Manual • March 2007
First Steps in Designing a Solution
There are two simple yet effective approaches for designing a Sun StorEdge 3510 FC
array or Sun StorEdge 3511 SATA array solution into your environment. Both
methods allow for the rapid estimation of an appropriate DAS or SAN solution.
Regardless of which method is used, the storage needs of each application and
server involved must be identified to establish the total amount of storage capacity
required.
Designing a Storage Solution for an Existing
Environment
The first method works well for existing environments. Start by identifying the
number of servers that can immediately benefit from the storage a Sun StorEdge
3510 FC array or Sun StorEdge 3511 SATA array provides.
■
A Sun StorEdge 3510 FC array can support five or more servers. If there are four
or fewer servers, a DAS solution is sufficient.
■
A Sun StorEdge 3511 SATA array can support seven or more servers. If there are
six or fewer servers, a DAS solution is sufficient. If you connect two servers to
channel 0 or to channel 1, use host filtering if you want to control host access to
logical drives.
With either the Sun StorEdge 3510 FC array or the Sun StorEdge 3511 SATA array, a
SAN solution can be a powerful option, even when the array is connected to a
number of servers that can otherwise be supported in a DAS solution. Combining
both the Sun StorEdge 3510 FC array and Sun StorEdge 3511 SATA array on the
same SAN allows for a tiered storage strategy, using Sun StorEdge SAM-FS as the
data mover among tiers. Determine how much storage is currently accessible to
these servers and plan for that total capacity as the minimum amount of Sun
StorEdge 3000 family disk capacity needed.
Designing a New Storage Solution
Another technique involves matching a particular environment to one of the best
practices solutions described in this document. This approach works particularly
well with new deployments, but it can be used for existing environments as well.
Take note of special features, such as the number of connections between servers and
storage. While these solutions do not match every environment exactly, use the
closest one as a design blueprint that can be customized to suite your particular