The R740xd and R740xd2 are 2U dense storage chassis for safety and security workloads. They support single or dual processors. The R740xd chassis supports 16 x 3.5" hard drives and the R740xd2 supports 26 x 3.5" hard drives. They use Dell PERC for Storage capacity and BOSS controllers for boot disks.
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.
We used 10 GbE interfaces. All tests were performed with 4mbps camera streams.
Dell recommends using RAID 6 with local storage to accommodate the disk rebuild duration. For example, in the Dell Technologies Safety & Security Lab, a disk rebuild in a 16 x 10 TB disk system takes at least 36 hours to complete when 10TB of data and 37.5 MB/s (300 Mb/s) of write are in place.
PowerEdge R740xd with local storage
The test results are based on a model in which the constant-bandwidth video traffic remained unaffected during select storage failure scenarios, such as disk rebuild.
The following table provides bandwidth-sizing guidelines with local storage based on our test results.
Specification | R740xd |
S-1 SVMS Version | 5.0.408.0 |
CPU | 2 x Intel(R) Xeon(R) Silver 4114 CPU @ 2.20GHz |
RAM GB | 256 GB |
Drive type | NL-SAS |
NIC speed | 10 Gb/s |
Storage Controller | PERC H740P Mini |
No of drives X Drive size TB | 16 x 12 TB |
RAID | 6 |
HotSpare | 1 |
Host Operating system | VMware ESXi, 7.0.2, 17630552 |
No of Instances | 4 |
Write BW per Archiver MB/s (Mb/s) | 25MBps (200mbps) |
Total Write BW per server MB/s (Mb/s) | 100MBps (800mbps) |
Total IOPS | 696 |
Disk Rebuild duration Days | 16 days |
Video Data storage | Local |