Dell ObjectScale

Version number: 4.1
Storage Category: S3-compatible Object Storage
Drive quantity, size, type: 

• 100 x 20TB SATA HDDs (WD / Seagate) per node. Used for data. 
• 1 x 960 GB SSD per node. Used for metadata. 

Cluster configuration:  7 nodes,  each node configured with a dual Intel Xeon Gold 6230R 26-core CPU and 192GB RAM
Storage configuration: 12 + 4 Erasure coding
Connection speed: 1 x 10 GbE
Additional support: Deployments of Dell ObjectScale 4.1 for S3 compatible storage on hardware with specifications equivalent or greater than above.

General product family overview:
Dell ObjectScale is a software-defined, cloud-scale, object storage platform.

Vendor Settings:

• Caching used: Yes
• Read/write caching: ObjectScale metadata is stored in B-trees. Each B-tree may have entries in memory, journal transactions, and on disk. For the system to have a complete picture of a particular B-tree, all three locations are queried, which often includes multiple lookups to disk. To minimize latency for metadata lookups, an optional SSD-based cache mechanism has been implemented in ObjectScale. The cache holds recently accessed B-tree pages. This means read operations on the latest B-trees will always hit the SSD-based cache and avoid trips to spinning disks.
• Multipathing: No
• Array deduplication used in testing: No
• Array compression used in testing: Yes