DataCore SANsymphony 

Product details for Veeam Backup & Replication v12 validation:

Model number: SANsymphony V10 
Storage Category: Software Defined Storage
Drive quantity, size, type: 8 x 350GB SSD
Cluster configuration: single node configured with 1 socket CPU Intel Xeon E5-2620v4 @ 2.1GHz and 64 GB memory
Storage configuration: RAID 10
Firmware version: SANsymphony V10 PSP17
Connection protocol and speed: 10 GbE iSCSI

Additional support: All configurations of SANsymphony V10 PSP17 with specifications equivalent or greater than the above

Best Practices: https://datacore.custhelp.com/app/answers/detail/a_id/1348

Product details for Veeam Backup & Replication v9.5 update 2 validation:
Model number: SANsymphony 10.0
Drive quantity, size, type: 4 - 450GB, SSD
Firmware version: 10.0
Connection protocol and speed: 10 GbE iSCSI

General product family overview:
DataCore SANsymphony is a Software-Defined Storage Solution for SAN and Hyperconverged (HCI) Environments, which allows to centrally automate and manage capacity provisioning and data placement across diverse storage environment.
Powered by a block-level storage virtualization technology and a rich set of data services, SANsymphony gives ultimate flexibility to control how data is stored and protected.
See the DataCore datasheet to check minimum hardware and software requirements https://www.datacore.com/products/sansymphony/features/. 

Veeam Testing Configuration for Veeam Backup & Replication v12:
Veeam Build Number: 12.1.1.56

Veeam Testing Configuration for Veeam Backup & Replication v9.5 update 2:
Veeam Build Number: 9.5.0.1038

Vendor Settings  for Veeam Backup & Replication v12 validation:

• Caching used: yes
• Read/write caching: the caching engine in SANsymphony works in read/write mode. It is possible to enable just write-through per LUN/vDisk as well if requested.
  For current validation 24GB was used for cache. 
• Multipathing / link aggregation used: MPIO
• Array deduplication used in testing: No
• Array compression used in testing: No