- Notes, cautions, and warnings
- Introduction to this guide
- PowerScale scale-out NAS
- General cluster administration
- General cluster administration overview
- User interfaces
- Connecting to the cluster
- Licensing
- Certificates
- Cluster identity
- Cluster date and time
- SMTP email settings
- Configuring the cluster join mode
- File system settings
- Security hardening
- Cluster monitoring
- Monitoring cluster hardware
- Events and alerts
- Cluster maintenance
- SRS Summary
- Access zones
- Authentication
- Authentication overview
- Authentication provider features
- Security Identifier (SID) history overview
- Supported authentication providers
- Active Directory
- LDAP
- NIS
- Kerberos authentication
- File provider
- Local provider
- Multi-factor Authentication (MFA)
- Multi-instance active directory
- LDAP public keys
- Managing Active Directory providers
- Managing LDAP providers
- Managing NIS providers
- Managing MIT Kerberos authentication
- Managing file providers
- Managing local users and groups
- Administrative roles and privileges
- Identity management
- Home directories
- Home directories overview
- Home directory permissions
- Authenticating SMB users
- Home directory creation through SMB
- Home directory creation through SSH and FTP
- Home directory creation in a mixed environment
- Interactions between ACLs and mode bits
- Default home directory settings in authentication providers
- Supported expansion variables
- Domain variables in home directory provisioning
- Data access control
- File sharing
- File sharing overview
- SMB security
- SMB shares in access zones
- SMB Multichannel
- SMB share management through MMC
- SMBv3 encryption
- SMB server-side copy
- SMB continuous availability
- SMB file filtering
- Symbolic links and SMB clients
- Anonymous access to SMB shares
- Managing SMB settings
- Managing SMB shares
- Create an SMB share
- Modify SMB share permissions, performance, or security
- Delete an SMB share
- Limit access to /ifs share for the Everyone account
- Configure anonymous access to a single SMB share
- Configure anonymous access to all SMB shares in an access zone
- Add a user or group to an SMB share
- Configure multi-protocol home directory access
- NFS security
- FTP
- HTTP and HTTPS security
- File filtering
- Auditing
- Snapshots
- Snapshots overview
- Data protection with SnapshotIQ
- Snapshot disk-space usage
- Snapshot schedules
- Snapshot aliases
- File and directory restoration
- Best practices for creating snapshots
- Best practices for creating snapshot schedules
- File clones
- Snapshot locks
- Snapshot reserve
- Writable snapshots
- SnapshotIQ license functionality
- Creating snapshots with SnapshotIQ
- Managing snapshots
- Restoring snapshot data
- Managing snapshot schedules
- Managing snapshot aliases
- Managing with snapshot locks
- Configure SnapshotIQ settings
- Set the snapshot reserve
- Managing changelists
- Deduplication with SmartDedupe
- Data replication with SyncIQ
- SyncIQ data replication overview
- Replication policies and jobs
- Replication snapshots
- Data failover and failback with SyncIQ
- Recovery times and objectives for SyncIQ
- Replication policy priority
- SyncIQ license functionality
- Replication for nodes with multiple interfaces
- Restrict SyncIQ source nodes
- Creating replication policies
- Managing replication to remote clusters
- Initiating data failover and failback with SyncIQ
- Performing disaster recovery for older SmartLock directories
- Managing replication policies
- Managing replication to the local cluster
- Managing replication performance rules
- Managing replication reports
- Managing failed replication jobs
- Data Encryption with SyncIQ
- Data layout with FlexProtect
- Large file size support
- NDMP backup and recovery
- NDMP backup and recovery overview
- NDMP two-way backup
- NDMP three-way backup
- Support for NDMP sessions on Generation 6 hardware
- Setting preferred IPs for NDMP three-way operations
- NDMP multi-stream backup and recovery
- Snapshot-based incremental backups
- NDMP backup and restore of SmartLink files
- NDMP protocol support
- Supported DMAs
- NDMP hardware support
- NDMP backup limitations
- NDMP performance recommendations
- Excluding files and directories from NDMP backups
- Configuring basic NDMP backup settings
- Managing NDMP user accounts
- NDMP environment variables overview
- Managing NDMP contexts
- Managing NDMP sessions
- Managing NDMP Fibre Channel ports
- Managing NDMP preferred IP settings
- Managing NDMP backup devices
- NDMP dumpdates file overview
- NDMP restore operations
- Sharing tape drives between clusters
- Managing snapshot based incremental backups
- Managing cluster performance for NDMP sessions
- Managing CPU usage for NDMP sessions
- File retention with SmartLock
- SmartLock overview
- Compliance mode
- Enterprise mode
- SmartLock directories
- Replication and backup with SmartLock
- SmartLock license functionality
- SmartLock considerations
- Set the compliance clock
- View the compliance clock
- Creating a SmartLock directory
- Managing SmartLock directories
- Managing files in SmartLock directories
- Set a retention period through a UNIX command line
- Set a retention period through Windows Powershell
- Commit a file to a WORM state through a UNIX command line
- Commit a file to a WORM state through Windows Explorer
- Override the retention period for all files in a SmartLock directory
- Delete a file committed to a WORM state
- View WORM status of a file
- Protection domains
- Data-at-rest-encryption
- Data-at-rest encryption overview
- Self-encrypting drives
- Data security on self-encrypting drives
- Data migrations and upgrades to a cluster with self-encrypting drives
- Enabling external key management
- Migrate nodes and SEDs to external key management
- Chassis and drive states
- Smartfailed drive REPLACE state
- Smartfailed drive ERASE state
- S3 Support
- SmartQuotas
- SmartQuotas overview
- Quota types
- Default quota type
- Usage accounting and limits
- Disk-usage calculations
- Quota notifications
- Quota notification rules
- Quota reports
- Creating quotas
- Managing quotas
- Managing quota notifications
- Email quota notification messages
- Managing quota reports
- Basic quota settings
- Advisory limit quota notification rules settings
- Soft limit quota notification rules settings
- Hard limit quota notification rules settings
- Limit notification settings
- Quota report settings
- Storage Pools
- Storage pools overview
- Storage pool functions
- Autoprovisioning
- Node pools
- Virtual hot spare
- Spillover
- Suggested protection
- Protection policies
- SSD strategies
- Other SSD mirror settings
- Global namespace acceleration
- L3 cache overview
- Tiers
- File pool policies
- Managing node pools in the web administration interface
- Managing L3 cache from the web administration interface
- Managing tiers
- Creating file pool policies
- Managing file pool policies
- Configure default file pool protection settings
- Default file pool requested protection settings
- Configure default I/O optimization settings
- Default file pool I/O optimization settings
- Modify a file pool policy
- Prioritize a file pool policy
- Create a file pool policy from a template
- Delete a file pool policy
- Monitoring storage pools
- Pool-based tree reporting in FSAnalyze (FSA)
- System jobs
- Networking
- Networking overview
- About the internal network
- About the external network
- Configuring the internal network
- Managing groupnets
- Managing external network subnets
- Managing IP address pools
- Managing SmartConnect Settings
- Managing network interface members
- Managing node provisioning rules
- Managing routing options
- Managing DNS cache settings
- Managing TCP ports
- NFS3oRDMA
- Partitioned Performance Monitoring
- Antivirus
- Antivirus overview
- On-access scanning
- ICAP Antivirus policy scanning
- Individual file scanning using ICAP
- WORM files and antivirus
- Antivirus scan reports
- ICAP servers
- CAVA servers
- ICAP threat responses
- CAVA threat responses
- Configuring global antivirus settings
- Managing ICAP servers
- Managing CAVA servers
- Add and connect to a CAVA server
- List or view CAVA servers
- Modify CAVA connection settings
- Disable connection to a CAVA server
- Delete connection to a CAVA server
- Add a job to a CAVA server
- View an IP pool in a CAVA server
- Create an Active Directory authentication provider for the AvVendor access zone
- Update the role in the access zone
- Scan CloudPool files in a CAVA server
- Create an antivirus policy
- Managing ICAP antivirus policies
- Managing antivirus scans
- Managing antivirus threats
- Managing antivirus reports
- File System Explorer
PowerScale OneFS Web Administration Guide
NDMP performance recommendations
Consider the following recommendations to optimize OneFS NDMP backups.
General performance recommendations
- Install the latest patches for OneFS and your data management application (DMA).
- To obtain optimal throughput per session, Dell Technologies recommends not to run the maximum number of NDMP concurrent sessions which is eight per Fibre Attached Storage node.
- NDMP backups result in very high Recovery Point Objectives (RPOs) and Recovery Time Objectives (RTOs). You can reduce your RPO and RTO by attaching one or more Fibre Attached Storage nodes to the cluster and then running two-way NDMP backups.
- The throughput for a PowerScale cluster during the backup and recovery operations is dependent on the dataset and is considerably reduced for small files and deep directory structures (>13).
- If you are backing up large numbers of small files, set up a separate schedule for each directory.
- If you are performing NDMP three-way backups, run multiple NDMP sessions on multiple nodes in your PowerScale cluster.
- Recover files through Directory DAR (DDAR) if you recover large numbers of files frequently.
- Use the largest tape record size available for your version of OneFS to increase throughput.
- If possible, do not include or exclude files from backup. Including or excluding files can affect backup performance, due to filtering overhead.
SmartConnect recommendations
- A two-way NDMP backup session with SmartConnect requires Fibre Attached Storage node for backup and recovery operations. However, a three-way NDMP session with SmartConnect does not require Fibre Attached Storage nodes for these operations.
- For a NDMP two-way backup session with SmartConnect, connect to the NDMP session through a dedicated SmartConnect zone consisting of a pool of Network Interface Cards (NICs) on the Fibre Attached Storage nodes.
- For a two-way NDMP backup session without SmartConnect, initiate the backup session through a static IP address or fully qualified domain name of the Fibre Attached Storage node.
- For a three-way NDMP backup operation, the front-end Ethernet network or the interfaces of the nodes are used to serve the backup traffic. Therefore, it is recommended that you configure a DMA to initiate an NDMP session only using the nodes that are not already overburdened serving other workloads or connections.
Fibre Attached Storage recommendations
- Assign static IP addresses to Fibre Attached Storage nodes.
- Attach more Fibre Attached Storage nodes to larger clusters. The recommended number of Fibre Attached Storage nodes is listed in the following table.
Table 1. Nodes per Fibre Attached Storage node Node type Recommended number of nodes per Fibre Attached Storage node X-Series 3 NL-Series 3 S-Series 3 HD-Series 3 - Attach more Fibre Attached Storage nodes if you are backing up to more tape devices.
DMA-specific recommendations
- Enable parallelism for the DMA if the DMA supports this option. This allows OneFS to back up data to multiple tape devices at the same time.
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