- Notes, cautions, and warnings
- Introduction
- Revision history
- Initial configuration and setup
- Performing common tasks
- Displaying system information at a glance
- Managing block storage
- Protection domains
- Fault sets
- Storage data servers
- Storage pools
- Acceleration pools
- Devices
- Volumes
- NVMe targets
- Hosts
- Managing file storage
- Overview of configuring NAS servers
- About file system storage
- File protection
- Create a protection policy
- Create snapshot rules
- Create a snapshot
- Assign a protection policy to a file system
- Unassign a protection policy
- Modify a protection policy
- Delete a protection policy
- Modify a snapshot rule
- Delete a snapshot rule
- Refresh a file system using snapshot
- Restore a file system from a snapshot
- Protecting a block storage environment
- Snapshots
- Create snapshots
- Overwrite volume content from a snapshot
- Set bandwidth and IOPS limits for snapshots
- Lock and unlock snapshots
- Delete snapshots
- Map snapshots
- Unmap snapshots
- Increase the size of a snapshot
- Migrate a snapshot vTree
- Pause snapshot vTree migration
- Roll back snapshot vTree migration
- Set snapshot vTree migration priority
- Snapshot policies
- Remote protection
- Extract and upload certificates
- Journal capacity
- Add a peer system
- Restart the replication cluster
- SDRs
- Replication consistency group
- Replication direction and mapping
- Create an RCG
- Map RCG target volumes to hosts
- Unmap a host from RCG target volumes
- Set the target to inconsistent mode
- Set the target to consistent mode
- Modify RPO
- Add a replication pair to an RCG
- Pause replication for an RCG
- Resume replication for an RCG
- Create a snapshot of an RCG volume
- Add an RCG snapshot policy
- Perform a failover
- Reverse replication
- Restore replication
- Test Failover
- Stop a failover test
- Freeze an RCG
- Unfreeze an RCG
- Activate an RCG
- Terminate replication in an RCG
- Delete an RCG
- Pause creation of an initial copy
- Resume creation of initial copy
- Set copying priority
- Unpair from RCG
- Snapshots
- Performing lifecycle operations for a resource group
- Deploying a resource configuration in a resource group
- Basic tasks
- Deploying a resource group
- Adding an existing resource group
- Updating a resource group with new firmware and software
- Viewing a compliance report
- Entering and exiting service mode
- Replacing a drive
- Replacing NVDIMM node or battery
- Reconfiguring MDM roles
- Migrating vCLS VMs to shared storage
- Adding components to a resource group
- Resize a volume
- Removing resources from a resource group
- Adding NVMe/TCP storage access
- Additional resource group management tasks
- Basic tasks
- Preparing a template for a resource group deployment
- Basic tasks
- Additional template management tasks
- Deploying a resource configuration in a resource group
- Managing resources
- Basic tasks
- Additional resource management tasks
- Monitoring events and alerts
- Configuring system settings
- User management
- Repositories
- Getting started
- Networking
- Events and alerts
- License management
- Security
- Serviceability
- Software upgrade
- PowerFlex Manager user interface reference
- Additional administration activities
- Retrieving logs for the PowerFlex nodes
- Retrieving logs for PowerFlex components
- Retrieving additional PowerFlex logs
- Enabling audit logging
- Managing storage devices using CloudLink
- Understanding NVMe over TCP load balancing
- Managing NAS server configuration
- Migrating to NVMe/TCP on ESXi
Dell PowerFlex 4.5.x Administration Guide
Configure RMcache for the storage pool
RMcache uses RAM that is allocated for caching. The size is limited to the amount of allocated RAM. By default, RMcache caching is disabled.
Prerequisites
About this task
RMcache caching only begins once storage devices have been added to the SDSs. It is possible to enable RMcache for a storage pool and then disable caching on one or more SDSs individually.
NOTE:Only I/Os that are multiples of 4K bytes can be cached.
Steps
- On the menu bar, click .
- In the list of storage pools, select the check box of the relevant storage pool, and click .
- In the Storage Pool Cache Settings dialog box, select Enable Read RMcache.
- Click Apply.
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