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
Related Disk Groups table
When you select a pool in the pools table, the disk groups for it appear in the Related Disk Groups table.
For selected pools, the Related Disk Groups table shows the following information:
Table 12. Disk Groups table
Field Description
Name Shows the name of the disk group.
Health Shows the health of the disk group: OK, Degraded, Fault, N/A, or Unknown.
Pool Shows the name of the pool to which the disk group belongs.
RAID Shows the RAID level for the disk group.
Class Shows the storage type for the disk group:
● Virtual (includes read-cache disk groups)
● Linear
Disk Description Shows the disk type. For virtual disk groups, the disk group's tier appears in parentheses after its
disk type. For read-cache disk groups, Read Cache appears in parentheses after the disk type.
Size Shows the storage capacity defined for the disk group when it was created.
Free Shows the available storage capacity for the disk group.
Current Job Shows the following current system operations for the disk group, if any are occurring:
● DRSC – A disk is being scrubbed.
● EXPD – The linear disk group is being expanded.
● INIT – The disk group is being initialized.
● RBAL – The ADAPT disk group is being rebalanced.
● RCON – At least one disk in the disk group is being reconstructed.
● VDRAIN – The disk group is being removed and its data is being drained to another disk group.
● VPREP – The virtual disk group is being prepared for use in a virtual pool.
● VRECV – The virtual disk group is being recovered to restore its membership in the virtual pool.
● VREMV – The virtual disk group and its data are being removed.
●
VRFY – The disk group is being verified.
● VRSC – The disk group is being scrubbed.
Status Shows the status for the disk group:
● CRIT – Critical. The disk group is online but isn't fault tolerant because some of its disks are
down.
● DMGD – Damaged. The disk group is online and fault tolerant, but some of its disks are damaged.
● FTDN – Fault tolerant with a down disk. The disk group is online and fault tolerant, but some of
its disks are down.
● FTOL – Fault tolerant and online. The disk group is online and fault tolerant.
● MSNG – Missing. The disk group is online and fault tolerant, but some of its disks are missing.
● OFFL – Offline. Either the disk group is using offline initialization, or its disks are down and data
may be lost.
● QTCR – Quarantined critical. The disk group is critical with at least one inaccessible disk. For
example, two disks are inaccessible in a RAID-6 disk group or one disk is inaccessible for other
fault-tolerant RAID levels. If the inaccessible disks come online or if after 60 seconds from being
quarantined the disk group is QTCR or QTDN, the disk group is automatically dequarantined.
● QTDN – Quarantined with a down disk. For example, the RAID-6 disk group has one inaccessible
disk. The disk group is fault tolerant but degraded. If the inaccessible disks come online or if
after 60 seconds from being quarantined the disk group is QTCR or QTDN, the disk group is
automatically dequarantined.
● QTOF – Quarantined offline. The disk group is offline with multiple inaccessible disks causing
user data to be incomplete, or is an NRAID or RAID-0 disk group.
● STOP – The disk group is stopped.
● UNKN – Unknown.
82 Working in the Pools topic