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
NOTE: For more information about write policy and read-ahead size, see Modifying a volume.
Snapshots table in the Volumes topic
To see more information about a snapshot and any child snapshots taken of it, select the snapshot or volume that is associated
with it in the volumes table. If it is not already selected, click the Snapshots tab. The snapshots and all related snapshots
appear in the Snapshots table.
The Snapshots table shows the following snapshot information. By default, the table shows 10 entries at a time.
● Name – Shows the name of the snapshot.
● Base Volume – Shows the name of the virtual volume from which the snapshot was created. All virtual volumes are base
volumes when created and are volumes from which virtual snapshots can be created.
● Parent Volume – Shows the name of the volume from which the snapshot was created.
● Creation Date/Time – Shows the date and time when the snapshot was created.
● Status – Shows whether the snapshot is available or unavailable. A snapshot can be unavailable for one of the following
reasons:
○ The source volume is not accessible or is not found.
○ The snapshot is pending.
○ A rollback with modified data is in progress.
● Snapshot Data – Shows the total amount of data associated with the specific snapshot (data copied from a source volume
to a snapshot and data written directly to a snapshot).
To see more information about a snapshot, hover the cursor over the snapshot in the table. The Snapshot Information panel
opens and displays detailed information about the snapshot.
Table 19. Snapshots Information panel
Panel Information displayed
Snapshot
Information
Name, serial number, status, status reason, retention priority, snapshot data, unique data, shared data,
pool, class, number of snaps, number of snapshots in tree, source volume, total size, creation date/time,
type, parent volume, base volume, health
NOTE: Class refers to the storage type: virtual or linear.
Maps table in the Volumes topic
To see information about the maps for a snapshot or volume, select the snapshot or volume in the volumes table. Then, select
the Map tab. The maps appear in the Maps table.
The Maps table shows the following mapping information. By default, the table shows 10 entries at a time.
● Group.Host.Nickname. Identifies the initiators to which the mapping applies:
○ initiator-name—The mapping applies to this initiator only.
○ initiator-ID—The mapping applies to this initiator only, and the initiator has no nickname.
○ host-name.*—The mapping applies to all initiators in this host.
○ host-group-name.*.*—The mapping applies to all hosts in this group.
● Volume. Identifies the volumes to which the mapping applies:
○ volume-name—The mapping applies to this volume only.
○ volume-group-name.*—The mapping applies to all volumes in this volume group.
● Access. Shows the type of access assigned to the mapping:
○ read-write—The mapping permits read and write access.
○ read-only—The mapping permits read access.
○ no-access—The mapping prevents access.
● LUN. Shows the LUN number or '*' if the map is to a volume group.
● Ports. Lists the controller host ports to which the mapping applies. Each number represents corresponding ports on both
controllers.
To display more information about a mapping, see Viewing map details.
Working in the Volumes topic
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