Configuring the Boot Sequence for Virtual Machines

Configure the boot sequence of virtual machines to set the order in which guest operating systems and applications are started on the ztC Edge system.

Determine the required boot sequence, then configure the boot settings for each virtual machine accordingly.

To set the boot sequence for a virtual machine

1. On the Virtual Machines page, select a virtual machine.
2. In the bottom pane, click the Boot Sequence tab.
3. Configure the boot settings, as described below.
4. Click Save.

The boot settings are as follows:

• Priority Group enables users to specify the order in which virtual machines boot after powering on the ztC Edge system or after a failover, which requires restarting virtual machines. Some business solutions require specific virtual machines to be running before starting others. Group 1 is the highest priority and none is the lowest. The Stratus Redundant Linux software waits for the OS and Application Start Time to elapse before starting virtual machines in the next priority group.

  Boot sequence example:

  VM	Priority Group	OS and Application Start Time
  DNS	1	2 mins
  App	2	30 secs
  DB	2	10 mins
  Web	3	0

  1	ztC Edge boots the DNS VM.
  2	2 minutes after the DNS VM is started, ztC Edge starts the App and DB servers in group 2.
  3	10 minutes after the DB VM is started, ztC Edge starts the Web VM in group 3.

• OS and Application Start Time should be set to the time it takes from starting the virtual machine until the guest operating system and applications are fully functional.