Dell PowerStore 1200T EMC PowerStore Protecting Your Data - Page 27

Con host connectivity, Monitor metro resources

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● A volume that is a read-only replication destination, left after replication is removed Steps 1. Select Storage > Volume and select the checkbox of a volume. 2. Select Protect > Configure Metro Volume. The Configure Metro Volume slide-out panel is displayed. 3. Select a remote system or configure a new remote system. 4. Optionally, select the placement of the volume on the remote system. 5. Click Configure. Configure host connectivity NOTE: Host support is provided for VMware vSphere metro storage cluster. Both Fibre Channel and SCSI connectivity are supported. Host metro connectivity is configured on a local and remote PowerStore systems and enables hosts and applications to perceive physical volumes from the two systems as a single volume. When you configure metro connectivity for the host, select the preferred array to determine which system will retain access to the storage in case of failure. To enable host metro connectivity, an ESXi host must be defined on both the local and remote systems and be connected to both systems. When you create a new ESXi host, the Add Host wizard enables you to set the host connectivity: ● Local Connectivity - Provides host access only to the local system. NOTE: Local connectivity can also be used with metro volumes. ● Metro Connectivity - Provides host access to both local and remote systems. If you select this option, set system access: ○ Metro local on both systems - Latency and performance of host path are equal for both local and remote systems. The host will send I/Os to the local or remote systems based on its multipath considerations. ○ Metro optimized on the current system - Host path latency is lower for the local system and higher for the remote system. The host will always attempt to send I/Os to the local system (except for when the local system is down). ○ Metro not optimized on the current system - Host path latency is lower for the remote system. The host will always attempt to send I/Os to the remote system (except when the remote system is down). NOTE: Regardless of the configured connectivity, all hosts must be configured on the same vCenter cluster. NOTE: For an ESXi host mapped to a metro volume, it is recommended to use round robin Path Selection Plugin (PSP) with latency mode enabled. NOTE: In case one of the systems goes offline, the ESXi host enters an All Paths Down (APD) condition. To resolve this condition, it is recommended to configure vSphere HA. This configuration enables virtual machines on available ESXi hosts to restart and resolve the APD condition. Monitor metro resources About this task You can monitor all the metro objects in the system and perform actions on selected resources or monitor the status of a selected metro volume. Steps 1. From the Dashboard, select Protection > Metro. 2. Select the checkbox of a metro volume to view the possible actions that you can perform on that volume. 3. To view detailed information about a specific metro volume, click the status of the volume in the Metro Status column. You can also view detailed information about a metro volume from the Storage > Volumes page. a. Click the name of a metro volume on the Storage > Volumes page to display the volume information page. b. Then select the Protection card and select the Metro Volume tab to display the metro volume information. Metro Protection 27

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●
A volume that is a read-only replication destination, left after replication is removed
Steps
1.
Select
Storage
>
Volume
and select the checkbox of a volume.
2.
Select
Protect
>
Configure Metro Volume
.
The
Configure Metro Volume
slide-out panel is displayed.
3.
Select a remote system or configure a new remote system.
4.
Optionally, select the placement of the volume on the remote system.
5.
Click
Configure
.
Configure host connectivity
NOTE:
Host support is provided for VMware vSphere metro storage cluster. Both Fibre Channel and SCSI connectivity are
supported.
Host metro connectivity is configured on a local and remote PowerStore systems and enables hosts and applications to perceive
physical volumes from the two systems as a single volume. When you configure metro connectivity for the host, select the
preferred array to determine which system will retain access to the storage in case of failure.
To enable host metro connectivity, an ESXi host must be defined on both the local and remote systems and be connected to
both systems.
When you create a new ESXi host, the
Add Host
wizard enables you to set the host connectivity:
●
Local Connectivity
- Provides host access only to the local system.
NOTE:
Local connectivity can also be used with metro volumes.
●
Metro Connectivity
- Provides host access to both local and remote systems. If you select this option, set system access:
○
Metro local on both systems
- Latency and performance of host path are equal for both local and remote systems. The
host will send I/Os to the local or remote systems based on its multipath considerations.
○
Metro optimized on the current system
- Host path latency is lower for the local system and higher for the remote
system. The host will always attempt to send I/Os to the local system (except for when the local system is down).
○
Metro not optimized on the current system
- Host path latency is lower for the remote system. The host will always
attempt to send I/Os to the remote system (except when the remote system is down).
NOTE:
Regardless of the configured connectivity, all hosts must be configured on the same vCenter cluster.
NOTE:
For an ESXi host mapped to a metro volume, it is recommended to use round robin Path Selection Plugin (PSP) with
latency mode enabled.
NOTE:
In case one of the systems goes offline, the ESXi host enters an All Paths Down (APD) condition. To resolve this
condition, it is recommended to configure vSphere HA. This configuration enables virtual machines on available ESXi hosts
to restart and resolve the APD condition.
Monitor metro resources
About this task
You can monitor all the metro objects in the system and perform actions on selected resources or monitor the status of a
selected metro volume.
Steps
1.
From the Dashboard, select
Protection
>
Metro
.
2.
Select the checkbox of a metro volume to view the possible actions that you can perform on that volume.
3.
To view detailed information about a specific metro volume, click the status of the volume in the
Metro Status
column.
You can also view detailed information about a metro volume from the
Storage
>
Volumes
page.
a.
Click the name of a metro volume on the
Storage
>
Volumes
page to display the volume information page.
b.
Then select the
Protection
card and select the
Metro Volume
tab to display the metro volume information.
Metro Protection
27