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
○ Informational. A configuration or state change occurred, or a problem occurred that the system corrected. No action is
required.
○ Resolved. A condition that caused an event to be logged has been resolved. No action is required.
● Date/Time. The date and time when the event occurred, shown in the format year-month-day hour:minutes:seconds. Time
stamps have one-second granularity.
● ID. The event ID. The prefix A or B identifies the controller that logged the event.
● Code. An event code that helps you and support personnel diagnose problems.
● Message. Brief information about the event. Click the message to show or hide additional information and recommended
actions.
● Ctrl. The ID of the controller that logged the event.
When reviewing the event log, look for recent Critical, Error, or Warning events. For each, click the message to view additional
information and recommended actions. Follow the recommended actions to resolve the problems.
Resources for diagnosing and resolving problems
● The troubleshooting chapter and LED descriptions appendix in your product's Deployment Guide
● The topics about verifying component failure in your product's FRU Installation and Replacement Guide
● The full list of event codes, descriptions, and recommended actions in your product's event documentation
Viewing capacity information
The capacity panel in the footer shows a pair of color-coded bars. The lower bar represents the physical capacity of the system,
and the upper bar identifies how the capacity is allocated and used.
Hover the cursor over a segment to see the storage type and size that is represented by that segment. For instance, in a
system where storage is being used, the bottom bar has color-coded segments that show the total unused disk space and space
that is used by disk groups. The total of these segments is equal to the total disk capacity of the system.
Hover the cursor over a segment to see the storage type and size that is represented by that segment. For instance, in a
system where both virtual and linear storage is being used, the bottom bar has color-coded segments that show the total
unused disk space that is allotted for virtual and linear disk groups and the space that is used by the disk groups. The total of
these segments is equal to the total disk capacity of the system.
In this same system, the top bar has color-coded segments for reserved, allocated, and unallocated space for disk groups. If
very little disk group space is used for any of these categories, it will not be visually represented.
In this same system, the top bar has color-coded segments for reserved, allocated, and unallocated space for virtual and linear
disk groups. If very little disk group space is used for any of these categories, it will not be visually represented.
Reserved space refers to space that is unavailable for host use. It consists of RAID parity and the metadata that is needed
for internal management of data structures. The terms allocated space and unallocated space have different meanings for the
virtual and linear storage technologies. For virtual storage, allocated space refers to the amount of space that is consumed by
data that is written to the pool. Unallocated space is the difference between the space that is designated for all volumes and
the allocated space.
Reserved space refers to space that is unavailable for host use. It consists of RAID parity and the metadata that is needed
for internal management of data structures. The terms allocated space and unallocated space have different meanings for the
virtual and linear storage technologies. Allocated space, for virtual storage, refers to the amount of space that is consumed by
data that is written to the pool. Unallocated space is the difference between the space that is designated for all volumes and
the allocated space.
For linear storage, allocated space is the space that is designated for all volumes. (When a linear volume is created, space
equivalent to the volume size is reserved for it. This is not the case for virtual volumes.) Unallocated space is the difference
between the overall and allocated space.
Hover the cursor over a segment of a bar to see the storage size represented by that segment. Point anywhere in this panel to
see the following information about capacity utilization in the Capacity Utilization panel:
● Total Disk Capacity: The total physical capacity of the system
● Unused: The total unused disk capacity of the system
● Global Spares: The total global spare capacity of the system
● Virtual/Linear Disk Groups: The capacity of the disk groups, both total and by pool.
● Reserved: The reserved space for the disk groups, both total and by pool
● Allocated: The allocated space for the disk groups, both total and by pool
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Working in the banner and footer