These Release Notes are for ztC Edge Release 1.2.0.5 (updated at 10:15 PM on 4/29/2021). See the following sections:
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ztC Edge Release 1.2.0.5 includes the following new features:
Also, beginning in Release 1.2.0.5, the online Help is available in German, Japanese, and Chinese.
You can upgrade to the current release from ztC Edge Release 1.2.0.0 by following the instructions in Upgrading Stratus Redundant Linux Software.
ztC Edge systems incorporate Intel Active Management Technology (AMT) lights-out support for remote power management, remote console, and remote media. For important information about AMT configuration and restrictions, see KB-8219.
Redeploying a ztC Edge system allows you to clear the network settings of the system to prepare it for deployment on a different network. If you need to move a system to a new network, redeploy and shut down the system before moving it, as described in Redeploying a ztC Edge System.
When you redeploy a system, note the following issues and workarounds:
Disable any NFS/CIFS shares before redeploying a system.
Active NFS/CIFS shares interfere with the redeployment feature. Disable the shares until you finish configuring the network settings on the new network.
System reboot needed when setting new static system IP address.
A system loses access to the secondary node if you redeploy and shut down the system, start it up in a new location, and then configure a new static system IP address. To regain access to the secondary node, reboot the system by opening the System page and clicking Reboot. Rebooting the system refreshes the gateway settings on the secondary node and allows it to connect to the system.
When you deploy a ztC Edge system, you must deploy both nodes at the same site and directly connect the A-links between the blue (•) and yellow (• •) network ports of each node. If you want to set up a ztC Edge system in a SplitSite configuration, where each node is located at a separate physical site for increased redundancy, contact your authorized Stratus service representative for assistance. Because of the geographic separation, a SplitSite configuration requires careful planning of component placement and networking topologies.
For other important considerations about ztC Edge systems, see Important Physical Machine and Virtual Machine Considerations.
If you use the P2V client (virt-p2v) to migrate a PM or VM running Windows, the migration may fail with the message, "error: inspection could not detect the source guest (or physical machine)." For more information about this issue, contact your Stratus service representative and refer to KB-8290.
If you use the P2V client (virt-p2v) to migrate a PM or VM from a source that is running VMware, the network driver might fail to install properly during the migration process, which leaves the VM network offline. If this happens, manually install the network driver in Device Manager. For instructions, see the Troubleshooting section of Migrating a Physical Machine or Virtual Machine to a System.
If you import a Windows-based VM with the Import/Restore Virtual Machine Wizard, the VirtIO network driver may fail to install properly the first time you start the VM, which leaves the VM network offline. If this happens, manually install the network driver in Device Manager. For instructions, see the Troubleshooting section of Importing an OVF File.
Before creating a VM, always ensure that the network you assign to the VM has an active network connection in each node of the system. You can verify the state of the networks on the Networks page of the ztC Console.
If you add a VM while one of the paired network interfaces is offline, the VM will not start. To start the VM, connect an active network cable to the offline interface, wait a few seconds, and start the VM.
To avoid downtime, before removing a VM, always ensure that both nodes are in the running state and that neither node is in maintenance mode or in the process of synchronizing.
If you remove a VM while one node is shut down in maintenance mode, the operation may stall with the error, "There was a problem deleting vm-name." To correct the problem, you must restart the only running node.
The ztC Console may improperly validate VM names to ensure that they meet the software requirements. If you are creating, reprovisioning, or renaming a VM with an unsuitable name, the operation may fail to execute.
To avoid any problems with VM operations, ensure that your VM names meet the following requirements:
If you are connected to the ztC Console using an https URL in a Microsoft Internet Explorer or Mozilla® FireFox® browser, and you click Console after selecting a running VM from the Virtual Machines page, the message VNC: Unable to connect, retrying in n seconds may appear. To enable the VNC connection, click the https link to the VNC console page in the upper right-hand corner of the masthead, and continue with the appropriate procedure below:
In Internet Explorer, the Security Alert wizard appears:
In FireFox, the Your connection is not secure window appears:
Click Confirm Security Exception.
The VNC console appears.
The Stratus Redundant Linux software on ztC Edge systems does not support the exFAT File system. If you need to mount a USB medium to import or export a VM, as described in Mounting a USB Device or Network-mounted Folder on the ztC Edge System, format the device with NTFS. (By default, most USB media are formatted with the FAT file system, which has a limited file size of 4 GB that may be too small for most VMs.)
When you change the IP address or netmask settings of an ztC Edge node as described in Configuring IP Settings, you must reboot the node or the system for the changes to take effect. If you do not reboot the node or the system, both the new and old settings will remain in effect, which may cause routing or connection issues.
If you change the maximum transmission unit (MTU) setting of either network0 (P1) or network1 (P2), the system automatically migrates the VMs from one node to the other. If you change the MTU for network0 (P1) specifically, the system also automatically fails over from the primary node to the secondary node.
To avoid this issue, avoid changing the MTU setting of the business networks, or change the MTU only during a planned maintenance period.
The following changes were made late in the release:
If you have a technical question about ztC Edge systems, you can find the latest technical information and online documentation at the Downloads page at https://www.stratus.com/services-support/downloads/?tab=ztcedge. You can also search the Knowledge Base in the Stratus Customer Service Portal at https://support.stratus.com.
If you cannot resolve your questions with these online resources, and the system is covered by a service agreement, contact your authorized Stratus service representative. For information, see the ztC Edge Support page at https://www.stratus.com/services-support/customer-support/?tab=ztcedge.
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