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: If you choose to disable background disk group scrub, you can still scrub a selected disk group by using Action >
Disk Group Utilities.
Configure background scrub for disk groups
1. In the System topic, choose Action > Advanced Settings > System Utilities.
2. Set the options:
● Either select to enable, or clear to disable the Disk Group Scrub option. This option is enabled by default.
● Set the Disk Group Scrub Interval (hours) option, which is the interval between background disk group scrub finishing
and starting again, from 0 through 360 hours. The default is 24 hours.
3. Click Apply.
Configuring background scrub for disks not in disk groups
You can enable or disable whether the system continuously analyzes disks that are not in disk groups to find and fix disk errors.
The interval between background disk scrub finishing and starting again is 72 hours. The first time you enable this option,
background disk scrub will start with minimal delay. If you disable and then re-enable this option, background disk scrub will start
72 hours after the last background disk scrub completed.
Enabling background disk scrub is recommended for SAS disks.
Configure background scrub for disks not in disk groups
1. In the System topic, choose Action > Advanced Settings > System Utilities.
2. Either select to enable, or clear to disable the Disk Scrub option. This option is disabled by default.
3. Click Apply.
Configuring utility priority
You can change the priority at which the Verify, Reconstruct, Expand, and Initialize utilities run when there are active I/O
operations competing for the system’s controllers.
Change the utility priority
1. In the System panel, choose Action > Advanced Settings > System Utilities.
2. Set the Utility Priority option to either:
● High. Use when your highest priority is to get the system back to a fully fault-tolerant state. This causes heavy I/O with
the host to be slower than normal. This value is the default.
● Medium. Use when you want to balance data streaming with data redundancy.
● Low. Use when streaming data without interruption, such as for a web server, is more important than data redundancy.
This enables a utility such as Reconstruct to run at a slower rate with minimal effect on host I/O.
3. Click Apply.
Enabling or disabling managed logs
You can enable or disable the managed logs feature, which allows log files to be transferred from the storage system to a
log-collection system to avoid losing diagnostic data. For an overview of the managed logs feature, including how to configure
and test it, see About managed logs.
Working in the System topic
73