Batch Upgrade | Trend Micro

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Batch upgrade allows upgrading of two or more parent and child devices. This option reserves log information during the upgrade process and does not cause any downtime.

Tip

Trend Micro recommends performing batch upgrade when email traffic is at a minimum. Evaluate if the IMSVA devices to be upgraded after the first batch can accommodate the total email traffic during the upgrade process.

Batch upgrade is best performed between 4:00 and 22:00. The daemon service on the child devices may be restarted outside the recommended time period, preventing these devices from connecting to the parent device.

The following is an overview of the batch upgrade process:

Select the first batch of child devices to upgrade.

Block connections between parent and child devices (with IP table or firewall), except devices selected in Step 1.

Note

At this stage, child devices should not be able to connect to the parent device. However, the parent device can connect to the child devices to conduct a pre-upgrade check.

Perform offline upgrade for the parent and child devices selected in Step 1.
Deploy the upgraded devices to production.
Perform offline upgrade for the rest of the child devices.
Restore the connection between the upgraded parent and child devices.
Deploy the upgraded devices to production.
Repeat the steps until all parent and child devices are upgraded.

Note

During the batch upgrade process, it is important to block the connection between parent and child devices.

Configure the firewall of the parent and child devices to block the second batch of child device upgrades. The child devices cannot be restarted unless the connection is blocked.