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HPE Nimble – Product Brief

Overview

The HPE Nimble Storage AF All Flash Series of solid-state technology storage systems use flash storage only and have common software with the earlier CS Series that used flash with spinning disk as backing store. The Adaptive Flash Series, denoted as HF, are Secondary Flash systems which contain SSDs and HDDs as target systems for backup or secondary storage. HPE Nimble Storage has multiple models in the two families and the largest in each family can be clustered for four systems. All models utilize a similar architecture with different amounts of CPU, DRAM, and Flash SSD within the controller for differentiation.

The HPE Nimble Storage Series use standard server hardware and NAND Flash SSDs. A base system has a fixed number of devices and depending on the model, additional enclosures may be added.

The HPE Nimble Storage All Flash systems are designed for data to remain on the SSDs rather than be offloaded to HDDs like the Adaptive Flash models. The HPE Nimble Storage AF80 and HF60 systems support clustering to provide a scale out architecture. Advanced features of data compression, deduplication, snapshots, encryption, shredding, pinning of volumes in Flash or disk, and asynchronous replication are included in the base system. Deduplication is not supported on the HF20C model.

A triple parity RAID is used across the devices for data protection in case of a device failure. Business continuity utilizes replication between Nimble and HPE 3PAR storage systems with Peer Persistence.

All features are included in the base price of HPE Nimble systems and include data compression, deduplication, snapshots, remote replication, and integration with host-level software such as VMware and Microsoft Windows. Host access is through iSCSI with 10GigE or 1GigE interfaces and Fibre Channel with 16 Gb/s Gen 5 interfaces. Currently, the capacity, along with some increased performance is achieved by adding additional enclosures to a controller system.

All scaling operations are non-disruptive and when additional systems are added to the cluster, data is automatically balanced across the cluster. System controllers utilize an active – passive design, with all writes mirrored in NVRAM to enable non-disruptive high availability.

Clustered nodes are added using a PCIe interconnects, using an Intel NTB (Non Transparent Bridge) technology. The maximum number of four clustered systems requires each controller have sufficient DRAM. Intermixing product families is not recommended.

Compression is performed inline as data is written to the HPE Nimble Storage system and decompressed on host access. All data stored internally is in compressed format, increasing the effective capacity and the internal bandwidth. Remote replication transfers only compressed data, reducing the amount of data transferred, which in turn, reduces the bandwidth required.
Nimble has NVMe protocol for SCM devices, currently used for caching.

HPE Nimble – Product Brief includes:

Highlights
Overview
Usage
EvaluScale Product Review Methodology
Evaluator Group Commentary

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Related to this document:
HPE Nimble – Product Analysis, SAN Comparison Matrix – Mid-Range,

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Technology:

Date:

September 26, 2023

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