xStack Storage DSN-Series SAN Arrays
VMware ESX 3.0.2 & 3.5
D-Link Systems, Inc. Page
12
December 2, 2009
Note that the default block size of a Virtual Machine File System is 1MB. This block size
supports storing virtual disk files up to a maximum of 256GB in size. If you plan to store virtual
disks larger than 256GB in the datastore, you must increase the block size to be greater than the
default. See Figure 6.
Figure 6: Disk/LUN Formatting
iSCSI/IP SAN Connectivity
As a best practice, D-Link recommends separating iSCSI traffic from other IP network traffic by
implementing a separate network or VLAN than the one used for VMotion or virtual machine
traffic. To enable ISCSI connectivity, the ESX Server requires a special connection type, referred
to as a VMkernel port, along with a service console port. The VMkernel network requires an IP
address that is currently not in use on the ESX Server. To configure the iSCSI connectivity,
follow these steps.