Changes

The disk write caching policy for virtual disks defines the point at which new data is written to the virtual disk (as opposed to being cached in memory before being written) by the guest operating system. These settings have implications for performance, with increased performance being available at the cost of data integrity. A choice of two policy options are is available:

The capacity of a virtual disk may be increased using the disk settings dialog (described above). As with most other virtual disk settings, a disk may only be increased in size when all virtual machines sharing the disk are powered off. Once this is achieved, select a virtual machine which uses the virtual disk from the ''Inventory'' panel of the VI Web Access interface, click on the required hard disk from the ''Hardware'' panel and select ''Edit...'' from the menu. Once the disk settings dialog appears, click on the ''Increase capacity...'' link to display the disk capacity fields as illustrated in the following figure:

The current size of the virtual disk is listed, together with two text boxes for the amount by which the disk is to be increased and the new capacity. Both are specified in gigabytes (GB), and either may be used to increase the size of the virtual disk. The amount of space available for allocation to the virtual disk is dictated by the available space on the ''datastore'' in which the virtual disk file resides. The current free space on the datastore is also listed beneath the capacity text boxes. The increase in virtual disk capacity cannot exceed this value.