Implementing SharePoint Server 2010 on Dell vStart Solution - A Reference Architecture for a
SharePoint Server 2010 farm on vStart 100 Hyper-V Solution
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database virtual machines were also made a part of the Hyper-V failover cluster to provide physical
host level high availability. This combination ensures faster database failover times using SQL failover
cluster capabilities and provides a second level of high availability using Hyper-V failover clustering.
A SharePoint farm’s performance depends on the performance of the database server and the database
storage backend. In this reference architecture, as the storage resources on the host server hosting the
virtual machine were limited, the SQL instance was connected directly to an external EqualLogic iSCSI
storage array. In this virtualized configuration of the SharePoint farm, one EqualLogic PS6100X storage
array was used to provide sufficient storage capacity and I/O bandwidth to the SQL database contents.
This array provides 24x 600GB 10K RPM SAS drives configured in a RAID 10 for storing the SharePoint
content.
The following table shows how the storage pool was used to host the SharePoint content and other
databases.
Table 7 SharePoint database volumes
SharePoint Content Database
SharePoint Search DB (Crawl,
Admin, and Property)
Other SharePoint Databases
(Config and AdminContent)
Memory configuration
By default, SQL Server service uses all available memory
because SQL Server dynamically grows and
shrinks the size of the buffer pool depending on the physical memory reported by the operating system.
However, this behavior can be adjusted to limit the amount of physical memory used by SQL Server.
Within the scope of this paper, SQL Server memory was limited to 80 percent of the memory available
in the VM container. For example, on the virtual clustered SQL database server, out of 16GB of memory
in the VM container, 12.8GB was allocated to SQL Server.
Network configuration
Similar to the WFE and application tiers, the database tier also used teamed network connections for
the farm network as shown in Figure 3. For the iSCSI storage network, two virtual network connections
were used for the in-guest iSCSI initiators, and MPIO was configured to provide load balancing and
failover capability.
SQL Server memory options - http://msdn.microsoft.com/en-us/library/ms178067.aspx
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