Implementers often organize two storage systems in a high-availability cluster with a private high-speed link, either a Fibre Channel, InfiniBand, 10 Gigabit Ethernet, 40 Gigabit Ethernet, or 100 Gigabit Ethernet. One can additionally group such clusters under a single namespace when running in the "cluster mode" of the Data ONTAP 8 operating system or on ONTAP 9.
Cross-Volume Deduplication storage efficiency features work only for SSD media. Inline and Offline Deduplication mechanisms that leverage databases consist of links of data blocks and checksums, for those data blocks that have been handled by the deduplication process. Each deduplication database is located on each volume and aggregates where deduplication is enabled. All Flash FAS systems do not support Post-process Compression.
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VIP (Virtual IP) LIFs require Top-of-the-Rack BGP Router used. BGP data LIFs along with NAS LIFs also can be used with Ethernet for NAS environment but in case of BGP LIFs, automatically load-balance traffic based on routing metrics and avoid inactive, unused links. BGP LIFs provide distribution across all the NAS LIFs in a cluster, not limited to a single node as in NAS LIFs. BGP LIFs provide smarter load balancing than it was realized with hash algorithms in Ethernet Port Channel & LACP with interface groups. VIP LIF interfaces are tested and can be used with MCC and SVM-DR.
Data ONTAP also implements an option named RAID SyncMirror (RSM), using the plex technique, where all the RAID groups within an aggregate or traditional volume can be synchronously duplicated to another set of hard disks. This is typically done at another site via a Fibre Channel or IP link, or within a single controller with local SyncMirror for a single disk-shelf resiliency. NetApp's MetroCluster configuration uses SyncMirror to provide a geo-cluster or an active/active cluster between two sites up to 300 km apart or 700 km with ONTAP 9.5 and MCC-IP. SyncMirror can be used either in software-defined storage platforms, on Cloud Volumes ONTAP, or on ONTAP Select. It provides high availability in environments with directly attached (non-shared) disks on top of commodity servers, or at FAS and AFF platforms in Local SyncMirror or MetroCluster configurations. SyncMirror is a free feature.
ONTAP Select can run on VMware ESXi and Linux KVM hypervisors. ONTAP Select leveraged RAID data protection on SSD and HDD drive level with underlying DAS, SAN, or vSAN storage systems. Starting with ONTAP Select 9.4 & ONTAP Deploy 2.8 software RAID supported with no requirements for 3rd party HW RAID equipment for KVM and starting with ONTAP 9.5 with ESXi. ONTAP Deploy is a virtual machine that provides a mediator function in MetroCluster or 2-node configurations, keeps track of licensing, and used to initial cluster deployment. Starting with ONTAP Deploy 2.11.2 vCenter plugin was introduced, which allows performing all the ONTAP Deploy functionality from vCenter. In contrast, previously management performed from either command line or with vSphere VM OVA setup master. Like on the FAS platform, ONTAP Select supports high availability and clustering. As a FAS platform, ONTAP Select is offered in two versions: HDD-only or All-Flash optimized. Previously ONTAP Select known as Data ONTAP Edge. Data ONTAP Edge product has Data ONTAP OS with version 8 and was able to run only atop of VMware ESXi. Starting with ONTAP 9.5 SW-MetroCluster over NSX overlay network supported. Starting with ONTAP 9.5 licensing changed from capacity tier-based, where licenses are linked with a node and perpetual to Capacity Pool Licensing with a time-limited subscription. ONTAP Select 9.5 get MQTT protocol supported for data transferring from the edge to a data center or a cloud.In April 2019, Octavian Tanase SVP ONTAP, posted a preview photo in his twitter of ONTAP running in Kubernetes as a container for a demonstration. 2ff7e9595c
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