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Huawei OceanStor Dorado – Product Brief

Last updated June 25th, 2020 for updates to V6 models. Concise 6-page product review of Huawei OceanStor Dorado. Product Brief includes EvaluScale Reviewing Methodology. Download the free Product Brief now!


The Huawei OceanStor Dorado V6 all flash storage family consists of the 3000, 5000, 6000, 8000, and 18000. The OceanStor Dorado line is similar to the Huawei OceanStor storage systems, with the Dorado designation signaling all flash systems. The V6 systems are the newest generation of Dorado systems, bringing performance increases and significant technology updates to the previous V3 systems.

Huawei uses custom built SSDs, termed HSSDs, in the OceanStor Dorado Systems. All models feature support for either SAS or NVMe HSSDs, with the exception of the lower end 3000 model which supports SAS only.

In addition to custom designed SSDs, Huawei has implemented a full set of custom chips in the OceanStor Dorado V6 models. V6 models utilize a total of five specialized chips that serve a variety of purposes. The custom Huawei chips used in the V6 Dorado models include a front-end interface chip (Hi1822), a Kunpeng 920 chip, an Ascend AI chip (Ascend 310), an SSD controller chip, and a baseboard management controller (BMC) chip (Hi1710).

Huawei has a wide range of storage products and the Dorado systems are all-flash, performance oriented systems that compete with other vendor systems across entry level, midrange, and high-end offerings. The Dorado models are traditional dual controller storage systems with active-active operation for performance and high availability. All Dorado V6 models are able to scale to accommodate up to 16 controllers, with the high end 18000 model capable of supporting up to 32 controllers.

Storage enclosures for the Dorado systems include options for a traditional SAS enclosure, a Smart SAS enclosure, or a Smart NVMe enclosure. The “Smart” designation indicates the inclusion of a Kunpeng 920 chip and DDR memory to assist in the offloading of computation from the controllers. The smart device enclosures connect with controllers via 100 Gb/s RDMA while the traditional SAS enclosures utilize 12 Gb/s SAS.

Connectivity for block access is through Fibre Channel, InfiniBand and iSCSI. NVMe-oF is available with 32 Gb/s NVMe over FC. The system uses a traditional RAID group architecture that has been adapted with storage pooling for thin provisioning. The maximum capacity is limited by number of device enclosures supported.
Advanced features of the OceanStor Dorado systems include:

  • Remote replication
  • Snapshots
  • Stretched Clusters
  • Virtualization of 3rd party attached storage
  • QoS
  • Deduplication
  • Compression

Huawei OceanStor Dorado Product Brief Includes:

Model Comparison
Evaluator Group Comments

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