- Notes, cautions, and warnings
- 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
Dell PowerVault ME4 Series Storage System Administrator’s Guide
Scrubbing a disk group
The system-level Disk Group Scrub option automatically checks all disk groups for disk defects. If this option is disabled, you can still perform a scrub on a selected disk group. A scrub analyzes the selected disk group to find and fix disk errors. A scrub also fixes parity mismatches for RAID 3, 5 and 6 and ADAPT and mirror mismatches for RAID 1 and 10.
A scrub can last over an hour, depending on the size of the disk group, the utility priority, and the amount of I/O activity. However, a manual scrub is typically faster than a background scrub. You can use a disk group while it is being scrubbed. When a scrub is complete, event 207 is logged and specifies whether errors were found and whether user action is required.
Please provide ratings (1-5 stars).
Please provide ratings (1-5 stars).
Please provide ratings (1-5 stars).
Please select whether the article was helpful or not.
Comments cannot contain these special characters: <>()\