Operation Manual

210
Optimizing iSCSI performance
In the environments that require high performance storage, such as virtualization, the
followings are recommended to optimize the iSCSI and NAS hard disk performance:
Use instant allocation: When creating an iSCSI LUN, select “Instant Allocation” to
achieve slightly higher iSCSI performance. However, the benefits of thin provisioning
will be lost.
Create multiple LUNs: Create multiple LUNs according to the number of processors on
the NAS. This information can be checked in “System Status” > “Resource Monitor”.
If the NAS has four processors, it is advised to create four or more LUNs to optimize
the iSCSI performance.
Use different LUNs for heavy load applications: Spread the applications such as
database and virtual machines that need high read/write performance on different
LUNs. For example, if there are two virtual machines which intensively read and write
data on the LUNs, it is recommended to create two LUNs on the NAS, so that the VM
workloads can be efficiently distributed.