Manage SRDF storage groups

As part of the AIOPS Predictive and Prescriptive Remediation initiative, Unisphere for PowerMax provides an overall view of the replication status of a storage group. This view provides a visual and interactive means of monitoring the replication from the viewpoint of an application. The focus is on providing users with sufficient information about each SRDF storage group (the storage group and its configured replication solution) so that they can make informed decisions more quickly and without the need to collate information from throughout Unisphere for PowerMax.

Prerequisites

See Roles and associated permissions to determine the user roles that can perform this task.

About this task

The SRDF Storage Group Details View provides you with a high-level overview of the SRDF status of a storage group, and is specially geared to improve your experience with HA/DR replication solutions. The high-level diagram helps to visualize how the components that make up the PowerMax HA/DR solutions interact with one another and the context they operate in. From this view, you can quickly understand any current issues affecting a SRDF storage group that could impact its ability to replicate data. This view also mirrors several list views from throughout Unisphere for PowerMax that augment the information that is shown and provide useful actions.

The SRDF Storage Group Details view provides specific warnings and help for a number of issues that may impact the performance of the replication configuration of the user.

The Critical state is determined if any of the following is true:

  • All initiators that are used in a storage group associated masking view are not logged in.
  • All initiators that are used in a storage group associated masking view are not on fabric.
  • All front end ports in a port group are offline.
  • All OR ports enabled for SRDF (V4) or all RF/RE ports enabled for SRDF (V3) are offline.
  • The remote storage group in an SRDF/A configuration is more than 99 cycles behind the local storage group.
  • The SRDF state of any SRDF pair in the SRDF Storage Group is in the Partitioned state.
  • The SRDF state of any SRDF pair in the SRDF Storage Group is in the Transmit Idle state.
  • The SRDF state of any SRDF pair in the SRDF Storage Group is in the Failed state.

The Warning state is determined if any of the following is true:

  • Some of the initiators that are used in a storage group associated masking view are not logged in.
  • Some of the initiators that are used in a storage group associated masking view are not on fabric.
  • Some of the front end ports in a port group are offline.
  • Some OR ports enabled for SRDF (V4) or some RF/RE ports enabled for SRDF (V3) are offline.
  • The remote storage group in an SRDF/A configuration is more than three cycles behind and fewer than 100 cycles behind the local storage group.
  • The storage group is protected by Metro, but does not have a vWitness configured.
  • The SRDF state of any SRDF pair in the SRDF Storage Group is in the Suspended state.
  • The SRDF state of any SRDF pair in the SRDF Storage Group is in the Split state.
  • The SRDF state of any SRDF pair in the SRDF Storage Group is in the Failed Over state.
  • The SRDF state of any SRDF pair in the SRDF Storage Group is in the R1 Update in Progress state.
  • The SRDF state of any SRDF pair in the SRDF Storage Group is in the R1 updated state.
  • The SRDF state of any SRDF pair in the SRDF Storage Group is in the Unknown state.
  • The SRDF state of any SRDF pair in the SRDF Storage Group is in the Invalid state.
  • The DSE Pool is active for the SRDF group.

Steps

  1. Select the storage system.
  2. Select Data Protection > Manage SRDF SGs.

    A list view is displayed that allows you to see the list of SRDF Storage Groups that have been configured for remote replication. The view has three tabs - Critical, Warning, and Normal. The Critical tab is displayed by default. In each tab, a list of storage groups is displayed. The following properties display for each storage group:

    • Storage Groups—Name of the storage group
    • SRDF Configuration—SRDF Configuration type ( Single, Metro, Cascaded, Concurrent, MetroDR, and Metro with DR)
    • Issues—Issues associated with the storage group
  3. Select a tab.
  4. Select the checkbox next to a storage group to view a summary of the overall replication status of the storage group.
  5. Click the storage group name. For a storage group with a single replication path (Single), the SRDF Status Details View containing the associated configuration and status information is displayed. For a storage group with multiple replication paths ( Cascaded, Concurrent, Metro, MetroDR and Metro with DR), a diagram showing all the replication paths is displayed. Select a replication path to view the SRDF Status Details View containing the associated configuration and status information. The associated configuration and status information is displayed in the following tabs:
    • Overview—An overview of the SRDF status is displayed.
    • Hosts—The related hosts and their associated configuration details are displayed. Click a host to view additional configuration details. Click Manage Hosts to manage the hosts (see View host and host groups).
    • Masking Views—The related masking views and their associated configuration details are displayed. Click a masking view to view additional configuration details. Click Manage Masking Views to manage the masking views (see View masking views).
    • Initiators—The related initiators and their associated configuration details are displayed. Click an initiator to view additional configuration details. Click Manage Initiators to manage the initiators (see View initiators).
    • Port Groups—The related port groups and their associated configuration details are displayed. Click a port group to view additional configuration details. Click Manage Port Groups to manage the port groups (see View port groups).
    • Hardware—The related hardware directors and their associated status details are displayed. Click a director to view additional configuration details. Click Online to set a selected port to be online. Click Offline to set a selected port to be offline. Click Manage OR Directors to manage the OR directors (see View OR directors). Click Manage EF Directors to manage the EF directors (see View EF directors). Click Manage FE Directors to manage the FE directors (see View system front-end directors). Click Manage RDF Directors to manage the SRDF directors (see View SRDF directors).
    • SRDF Groups—The related SRDF groups and their associated configuration details are displayed. Click a SRDF group to view additional configuration details. Click Manage SRDF Groups to manage the SRDF groups (see View SRDF groups).
    • Data Protection—The storage group SRDF relationships information is displayed. Click a storage group to view additional configuration details. Click Manage Data protection to manage the storage group SRDF relationships (see View storage group SRDF relationships).