Dell Storage Manager 2020 R1 Administrator's Guide

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Key Features of the Scale-Out NAS

The following table summarizes key features of scale-out NAS.


Feature	Description
Shared back-end infrastructure	The Storage Center SAN and scale-out NAS leverage the same virtualized disk pool.
File management	Storage Center SAN and scale-out NAS management and reporting using Dell Storage Manager.
High-performance, scale-out NAS	Support for a single namespace spanning up to four NAS appliances (eight NAS controllers).
Capacity scaling	Ability to scale a single namespace up to 4-PB capacity with up to eight Storage Centers.
Connectivity options	Offers 1GbE and 10GbE copper and optical options for connectivity to the client network.
Highly available and active-active design	Redundant, hot-swappable NAS controllers in each NAS appliance. Both NAS controllers in a NAS appliance process I/O.
Multitenancy	Multitenancy enables a single physical FluidFS cluster to be connected to several separated environments and manage each environment individually.
Automatic load balancing	Automatic balancing of client connections across network ports and NAS controllers, as well as back-end I/O across Storage Center volumes.
Multiprotocol support	Support for SMB (on Windows), NFS (on UNIX and Linux), and FTP/FTPS protocols with ability to share user data across all protocols.
Client authentication	Controls access to files using local and remote client authentication, including LDAP, Active Directory, and NIS.
Quota rules	Control client space usage.
File security style	Choice of file security mode for a NAS volume (UNIX, Windows, or Mixed).
Storage Center Data progression	Automatic migration of inactive data to less-expensive drives.
Storage Center Dynamic capacity	Thin-provisions the block-level storage allocated to the NAS pool and NAS volumes and consumes space only when writes occur.
Cache mirroring	The write cache is mirrored between NAS controllers, which ensures a high-performance response to client requests and maintains data integrity in the event of a NAS controller failure.
Journaling mode	In the event of a NAS controller failure, the cache in the peerg NAS controller is written to storage and the peer NAS controller continues to write directly to storage, which protects against data loss.
Backup power supply	Maintains data integrity in the event of a power failure by keeping a NAS controller online long enough to write the cache to the internal storage device.
NAS volume thin clones	Clones NAS volumes without needing to physically copy the data set.
Deduplication	Policy-driven post-process deduplication technology that eliminates redundant data at rest.
Compression	LZPS (Level Zero Processing System) compression algorithm that intelligently shrinks data at rest.
Metadata protection	Metadata is constantly checksummed and stored in multiple locations on both the FS Series appliance and within the Storage Centers for data consistency and protection.
Snapshots	Redirect-on-write snapshots that are user-accessible over the network.
Replication	NAS volume-level, snapshot-based, asynchronous replication to remote FluidFS clusters to enable disaster recovery.
NDMP backup	Snapshot-based, asynchronous, two-way backup (direct NDMP), or three-way backup (remote NDMP) over Ethernet to certified third-party backup solutions.
Antivirus scanning	SMB antivirus scanning offloading using certified third-party, Internet Content Adaptation Protocol (ICAP)-enabled antivirus solutions.
Monitoring	Built-in performance monitoring and capacity planning.