Administrator Guide
Table Of Contents
- Dell EMC PowerVault ME4 Series Storage System Administrator’s Guide
- Contents
- Getting started
- New user setup
- Configure and provision a new storage system
- Using the PowerVault Manager interface
- System concepts
- About virtual and linear storage
- About disk groups
- About RAID levels
- About ADAPT
- About SSDs
- About SSD read cache
- About spares
- About pools
- About volumes and volume groups
- About volume cache options
- About thin provisioning
- About automated tiered storage
- About initiators, hosts, and host groups
- About volume mapping
- About operating with a single controller
- About snapshots
- About copying volumes
- About reconstruction
- About quick rebuild
- About performance statistics
- About firmware updates
- About managed logs
- About SupportAssist
- About CloudIQ
- About configuring DNS settings
- About replicating virtual volumes
- About the Full Disk Encryption feature
- About data protection with a single controller
- Working in the Home topic
- Guided setup
- Provisioning disk groups and pools
- Attaching hosts and volumes in the Host Setup wizard
- Overall system status
- Configuring system settings
- Managing scheduled tasks
- Working in the System topic
- Viewing system components
- Systems Settings panel
- Resetting host ports
- Rescanning disk channels
- Clearing disk metadata
- Updating firmware
- Changing FDE settings
- Configuring advanced settings
- Changing disk settings
- Changing system cache settings
- Configuring partner firmware update
- Configuring system utilities
- Using maintenance mode
- Restarting or shutting down controllers
- Working in the Hosts topic
- Working in the Pools topic
- Working in the Volumes topic
- Viewing volumes
- Creating a virtual volume
- Creating a linear volume
- Modifying a volume
- Copying a volume or snapshot
- Abort a volume copy
- Adding volumes to a volume group
- Removing volumes from a volume group
- Renaming a volume group
- Remove volume groups
- Rolling back a virtual volume
- Deleting volumes and snapshots
- Creating snapshots
- Resetting a snapshot
- Creating a replication set from the Volumes topic
- Initiating or scheduling a replication from the Volumes topic
- Manage replication schedules from the Volumes topic
- Working in the Mappings topic
- Working in the Replications topic
- About replicating virtual volumes in the Replications topic
- Replication prerequisites
- Replication process
- Creating a virtual pool for replication
- Setting up snapshot space management in the context of replication
- Replication and empty allocated pages
- Disaster recovery
- Accessing the data while keeping the replication set intact
- Accessing the data from the backup system as if it were the primary system
- Disaster recovery procedures
- Viewing replications
- Querying a peer connection
- Creating a peer connection
- Modifying a peer connection
- Deleting a peer connection
- Creating a replication set from the Replications topic
- Modifying a replication set
- Deleting a replication set
- Initiating or scheduling a replication from the Replications topic
- Stopping a replication
- Suspending a replication
- Resuming a replication
- Manage replication schedules from the Replications topic
- About replicating virtual volumes in the Replications topic
- Working in the Performance topic
- Working in the banner and footer
- Banner and footer overview
- Viewing system information
- Viewing certificate information
- Viewing connection information
- Viewing system date and time information
- Viewing user information
- Viewing health information
- Viewing event information
- Viewing capacity information
- Viewing host information
- Viewing tier information
- Viewing recent system activity
- Other management interfaces
- SNMP reference
- Using FTP and SFTP
- Using SMI-S
- Using SLP
- Administering a log-collection system
- Best practices
- System configuration limits
- Glossary of terms
2. In the Volumes topic, select a volume that belongs to each volume group that you want to remove. You can remove 1
through 100 volume groups at a time.
3. Select Action > Remove Volume Group. The Remove Volume Group panel opens and lists the volume groups to be
removed.
4. Select the Delete Volumes check box.
5. Click OK. A confirmation panel appears.
6. Click Yes to continue. Otherwise, click No.
If you clicked Yes, the volume groups and their volumes are deleted and the volumes table is updated.
Rolling back a virtual volume
You can replace the data of a source volume or virtual snapshot with the data of a snapshot that was created from it.
CAUTION: When you perform a rollback, the data that existed on the volume is replaced by the data on the
snapshot. All data on the volume written since the snapshot was created is lost. As a precaution, create a
snapshot of the volume before starting a rollback.
Only one rollback is allowed on the same volume at one time. Additional rollbacks are queued until the current rollback is
complete. However, after the rollback is requested, the volume is available for use as if the rollback has already completed.
For volumes and snapshots, if the contents of the selected snapshot have changed since it was created, the modified contents
will overwrite those of the source volume or snapshot during the rollback. Since virtual snapshots are copies of a point in
time, they cannot be reverted. If you want a snapshot to provide the capability to “revert” the contents of the source volume
or snapshot to when the snapshot was created, create a snapshot for this purpose and archive it so you do not change the
contents.
To see more information about a volume, hover the cursor over the volume in the table. See Viewing volumes for more
information about the Volume Information panel that appears.
Roll back a volume
Perform the following steps to roll back a volume:
1. Unmount the volume from hosts.
2. In the Volumes topic, select the volume to roll back.
3. Select Action > Rollback Volume. The Rollback Volume panel opens and lists snapshots of the volume.
4. Select the snapshot to roll back to.
5. Click OK.
A confirmation panel appears.
6. Click OK.
You can remount the volume after the rollback completes.
Deleting volumes and snapshots
You can delete volumes and snapshots. You can delete a volume that has no child snapshots. You cannot delete a volume that is
part of a replication set.
CAUTION: Deleting a volume or snapshot removes its mappings and schedules and deletes its data.
NOTE: To delete a volume with one or more snapshots, or a snapshot with child snapshots, you must delete the snapshots
or child snapshots first.
To see more information about a volume or snapshot, hover the cursor over the item in the volumes table.
You can view additional snapshot information by hovering the cursor over the snapshot in the Related Snapshots table. See
Viewing volumes for more information about the Volume Information and Snapshot Information panels that appear.
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Working in the Volumes topic