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
Table 28. Historical performance (continued)
System component Graph Description
not cause any allocations. Pages are
allocated as data is written.
Tier Number of Page Moves In Number of pages moved into this tier
from a different tier.
Tier Number of Page Moves Out Number of pages moved out of this tier
to other tiers.
Tier Number of Page Rebalances Number of pages moved between disk
groups in this tier to automatically load
balance.
Tier Number of Initial Allocations Number of pages that are allocated as
a result of host writes. This number
does not include pages allocated as
a result of background tiering page
movement. (Tiering moves pages from
one tier to another, so one tier will
see a page deallocated, while another
tier will show pages allocated; these
background moves are not considered
“initial allocations.”)
Tier Number of Unmaps Number of 4-MB pages that are
automatically reclaimed and deallocated
because they are empty (they contain
only zeroes for data).
Tier Number of RFC Copies Number of 4-MB pages copied from
spinning disks to SSD read cache (read
flash cache).
Tier Number of Zero-Pages Reclaimed Number of empty (zero-filled) pages
that were reclaimed during this sample
period.
Updating historical statistics
The Performance topic can show historical performance statistics for the following types of components: disks, disk groups, and
virtual pools and tiers. By default, the newest 100 samples are shown. For more information about performance statistics, see
About performance statistics.
Update displayed historical statistics
1. Display a historical statistics graph as described in Viewing performance statistics.
2. Select Action > Update Historical Statistics.
The Update Historical Statistics panel opens and shows the default count value of 100.
3. To specify a count, in the Count field enter a value in the range of 5 to 100 and click OK.
4. To specify a time range, perform the following:
● Select the Time Range check box.
● Set date/time values for the starting and ending samples. The values must be between the current date/time and 6
months in the past. The ending values must be more recent than the starting values.
NOTE: If you specify a time range, it is recommended to specify a range of 24 hours or less.
● Click OK.
In the Historical Data area of the Performance topic, the Time Range values are updated to show the times of the oldest and
newest samples displayed. The graph for the selected components is updated.
Working in the Performance topic
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