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
Multipath configuration
ME4 Series storage systems comply with the SCSI-3 standard for Asymmetrical Logical Unit Access (ALUA).
ALUA compliant storage systems will provide optimal and non-optimal path information to the host during device discovery, but
the operating system must be directed to use ALUA. You can use the following procedures to direct Windows and Linux systems
to use ALUA.
Use one of the following procedures to enable MPIO.
Enabling MPIO on Windows
1. Start Server Manager if it is not already running.
2. In the Manage menu, select Add Roles and Features.
3. In the Add Roles and Features Wizard, select Role-based or Feature Based Installation.
4. Click Next.
5. Select the server from the pool and then click Next.
6. Click Next again to go to the feature selection window.
7. Select the Multipath IO checkbox and then click Next.
8. Click Install.
9. When prompted, reboot the system.
When the reboot is complete, MPIO is ready to use.
Enabling MPIO on Linux
1. Run the following command to ensure that the multipath daemon is installed and set to start at run-time:
chkconfig multipathd on
2. Ensure the correct entries exist in the /etc/multipath.conf file on each OSS/MDS host. Create a separate device entry for
the ME4 Series storage system. The following table specifies four attributes that should be set. Run the following command
to obtain the exact vendor and product ID values:
multipath -v3
Attribute
Value
prio alua
failback immediate
vendor vendor-name
product product-ID
3. Run the following command to reload the multipath.conf file:
service multipathd reload
4. Run the following command to determine if the multipath daemon used ALUA to obtain the optimal/non-optimal paths:
multipath -v3 | grep alua
You should see output stating that ALUA was used to configure the path priorities. For example:
Oct 01 14:28:43 | sdb: prio = alua (controller setting) Oct 01 14:28:43 | sdb: alua prio
= 130
Best practices
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