The test results are based on a model in which the constant-bandwidth safety and security video traffic remained unaffected during select storage failure scenarios, such as disk rebuild, node failures, and failing network paths.
We performed all tests with disk drive failures, node failures, storage process failures, or NIC failures to ensure a worst-case scenario for all sizing parameters.
Dell Technologies recommends:
- Using SSD or 15k rpm SAS drives for the GeoDrive cache disks.
- Calculating drive space requirements for local disk and ECS buckets based on the retention times used.
The following table provides bandwidth-sizing guidelines based on our test results.
XProtect version | ECS Cluster | ECS Version | GeoDrive version | Daily cluster GC reclamation rate (TB) per node |
2020 | ECS EX3000 | 3.5.1.1 | 2.1.3.4 | 20 |
The following table provides bandwidth-sizing guidelines based on our test results.
Cluster | ECS version | No. of drives/ECS node | ECS node drives | Recorders per node | Bandwidth (MB/s) | ||
Size | Type | Recorder | Node | ||||
U400 | 3.2.0.0 | 30 | 8 TB | NL-SAS | 1 | 40 | 40 |
30 | 8 TB | NL-SAS | 2 | 40 | 80 | ||
30 | 8 TB | NL-SAS | 3 | 26 | 78 | ||
30 | 8 TB | NL-SAS | 4 | 20 | 80 |