Configuring VMware for Storage Gateway - Amazon Storage Gateway
Synchronizing VM Time with Host TimeUsing Storage Gateway with VMware High Availability
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Configuring VMware for Storage Gateway

When configuring VMware for Storage Gateway, make sure to synchronize your VM time with your host time, configure VM to use paravirtualized disk controllers when provisioning storage and provide protection from failures in the infrastructure layer supporting a gateway VM.

Synchronizing VM Time with Host Time

To successfully activate your gateway, you must ensure that your VM time is synchronized to the host time, and that the host time is correctly set. In this section, you first synchronize the time on the VM to the host time. Then you check the host time and, if needed, set the host time and configure the host to synchronize its time automatically to a Network Time Protocol (NTP) server.

Important

Synchronizing the VM time with the host time is required for successful gateway activation.

To synchronize VM time with host time

  1. Configure your VM time.

    1. In the vSphere client, open the context (right-click) menu for your gateway VM, and choose Edit Settings.

      The Virtual Machine Properties dialog box opens.

      vSphere client with Storage Gateway VM context menu and edit setting option selected.

    2. Choose the Options tab, and choose VMware Tools in the options list.

    3. Check the Synchronize guest time with host option, and then choose OK.

      The VM synchronizes its time with the host.

      Virtual Machine Properties screen with options tab and synchronize guest time with host selected.

  2. Configure the host time.

    It is important to make sure that your host clock is set to the correct time. If you have not configured your host clock, perform the following steps to set and synchronize it with an NTP server.

    1. In the VMware vSphere client, select the vSphere host node in the left pane, and then choose the Configuration tab.

    2. Select Time Configuration in the Software panel, and then choose the Properties link.

      The Time Configuration dialog box appears.

      vSphere screen with host node, configuration tab, time configuration, and properties selected.

    3. In the Date and Time panel, set the date and time.

      vSphere time configuration screen with time and date fields highlighted.

    4. Configure the host to synchronize its time automatically to an NTP server.

      1. Choose Options in the Time Configuration dialog box, and then in the NTP Daemon (ntpd) Options dialog box, choose NTP Settings in the left pane.

        vSphere NTP daemon options screen with NTP settings highlighted.

      2. Choose Add to add a new NTP server.

      3. In the Add NTP Server dialog box, type the IP address or the fully qualified domain name of an NTP server, and then choose OK.

        You can use pool.ntp.org as shown in the following example.

        vSphere Add NTP Server screen with address field populated.

      4. In the NTP Daemon (ntpd) Options dialog box, choose General in the left pane.

      5. In the Service Commands pane, choose Start to start the service.

        Note that if you change this NTP server reference or add another later, you will need to restart the service to use the new server.

        vSphere NTP Daemon Options screen with General panel selected and start highlighted.

    5. Choose OK to close the NTP Daemon (ntpd) Options dialog box.

    6. Choose OK to close the Time Configuration dialog box.

Using Storage Gateway with VMware High Availability

VMware High Availability (HA) is a component of vSphere that can provide protection from failures in the infrastructure layer supporting a gateway VM. VMware HA does this by using multiple hosts configured as a cluster so that if a host running a gateway VM fails, the gateway VM can be restarted automatically on another host within the cluster. For more information about VMware HA, see VMware HA: Concepts and Best Practices on the VMware website.

To use Storage Gateway with VMware HA, we recommend doing the following things:

  • Deploy the VMware ESX .ova downloadable package that contains the Storage Gateway VM on only one host in a cluster.

  • When deploying the .ova package, select a data store that is not local to one host. Instead, use a data store that is accessible to all hosts in the cluster. If you select a data store that is local to a host and the host fails, then the data source might not be accessible to other hosts in the cluster and failover to another host might not succeed.

  • With clustering, if you deploy the .ova package to the cluster, select a host when you are prompted to do so. Alternately, you can deploy directly to a host in a cluster.