vstart is the starting virtual address, or the offset, for Adaptive Server to begin using the database device. vstart accepts the following optional unit specifiers: k or K (kilobytes), m or M (megabytes), and g or G (gigabytes). The size of the offset depends on how you enter the value for vstart.
If
you do not specify a unit size, vstart uses 2K
pages for its starting address. For example, if you specify vstart = 13, Adaptive
Server uses 13 * 2K pages as the offset for the starting
address.
If you specify a unit value, vstart uses
this as the starting address. For example, if you specify vstart = "13M",
Adaptive Server sets the starting address offset at 13 megabytes.
The default value (and usually the preferred value) of vstart is 0. If the specified device does not have the sum of vstart + size blocks available, the disk init command fails.
The optional cntrltype keyword specifies the disk controller. Its default value is 0. Reset it only if instructed to do so.
To
perform disk initialization, the user who started Adaptive Server
must have the appropriate operating system permissions on the device
that is being initialized.
