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 Uses a single disk controller for both Boot and Storage capacity.
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, failing processors, 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.
Multiarchiver tests were conducted with a single instance of running multiple Archiver services.
We used 10 GbE interfaces with up to four connections at the maximum supported values. We performed all tests with a per bandwidth of 37.5 MB/s (300 Mb/s) with a combination of 1 Mb/s and 5 Mb/s cameras.
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 R740xd2 with local storage
The following table provides bandwidth-sizing guidelines with local storage based on our test results.
Specification | R740xd-2 | |||
Security Center Version | 5.7 | 5.7 | 5.8 | 5.8 |
CPU | 2 X 14 Cores Intel (R) Xeon(R) Gold 5120 CPU @ 2.20GHz | 2 X 14 Cores Intel (R) Xeon (R) Gold 5120 CPU @ .20GHz | 2 X 14 Cores Intel (R) Xeon (R) Gold 5120 CPU @ .20GHz | 2 X 14 Cores Intel(R) Xeon(R) Gold 5120 CPU @ 2.20GHz |
RAM GB | 256 | 256 | 256 | 256 |
Drive type | NL-SAS | NL-SAS | NL-SAS | NL-SAS |
NIC speed | 2X10 Gb | 2X10 Gb | 2X10 Gb | 2X10 Gb |
Storage Controller | H730P | H730P | H730P | H730P |
No of drives X Drive size TB | 26 X 8 TB | 26 X 8 TB | 26 X 8 TB | 26 X 8 TB |
RAID | 6 (22+2) | 6 (22+2) | 6 (22+2) | 6 (22+2) |
HotSpare | 2 | 2 | 2 | 2 |
Host Operating system | Windows 2016 data center | ESXi with Windows Server 2016 | ESXi with Windows Server 2016 | Windows 2016 Server |
No of Instances | 3 Archiver roles per Windows Server | 3 VM Archivers per ESXi host. 1 Archiver role per VM | 4 VM Archivers per ESXi host. 1 Archiver role per VM (IP) | 4 Archiver roles per Windows Server |
Write BW per Archiver MB/s (Mb/s) | 37.5 (300) | 37.5 (300) | 37.5 (300) | 37.5 (300) |
Total Write BW per server MB/s (Mb/s) | 112.5 (900) | 112.5 (900) | 150 (1200) | 150 (1200) |
Total IOPS | 1551 | 1551 | 1551 | 1551 |
Disk Rebuild duration Days | 11 | 11 | 11 | 11 |
Video Data storage | Local | Local | Local | Local |
PowerEdge R740xd with local storage
The following table provides bandwidth-sizing guidelines with local storage based on our test results.
Specification | R740xd |
Security Center Version | 5.9 |
CPU | 2 X 12 Cores Intel(R) Xeon(R) Gold 6126 CPU @ 2.60GHz |
RAM GB | 256 |
Drive type | NL-SAS |
NIC speed | 2X10 Gb |
Storage Controller | H730P |
No of drives X Drive size TB | 16 X 8 TB |
RAID | 6 (13+2) |
HotSpare | 1 |
Host Operating system | Windows Server 2019 |
No of Instances | 4 Archiver roles per Windows Server |
Write BW per Archiver MB/s (Mb/s) | 37.5 (300) |
Total Write BW per server MB/s (Mb/s) | 150 (1200) |
Total IOPS | 1551 |
Disk Rebuild duration Days | 11 |
Video Data storage | Local |