Intel IvyBridge processor
Asymmetric distributed clustering architecture
Built-in dedicated cloud storage opearating system
Store video stream without intermediate processing
24 HDDs, SATA/SAS, hot-swap
Device-level fault tolerance
Load balancing based on HDD capacity and performance
Modular & Cableless design
Redundant power supply
| Hardware |
| System Architecture |
Asymmetric distributed architecture |
| Number of nodes |
2 to 160 |
| Form Factor |
4U rack server |
| Processor |
Inter IvyBridge 4 cores |
| Data Disk Type |
2.5-inch/3.5-inch SATA and SAS enterprise HDD
1TB/2TB/3TB/4TB/6TB |
| Number of Disks |
24 |
| Storage Network type |
8 x 1 GE, load balancing |
| Other interfaces |
1 x USB3.0, 1 x eSATA, 2 x SAS, 1 x RS232, 1 x RS485, 1 x 1GE management interface |
| System Architecture |
| Cluster Architecture |
Distributed objective storage architecture |
| Distributed Storage |
Erasure coding technology, data is segmented and saved in multiple storage nodes |
| Data Protection Level |
Dynamic N+M mode: 1+1, 4+1, 8+2, 12+3, 16+4, data is still usable after M storage nodes fail |
| File System |
| File System |
Dahua EFS distributed file system |
| Data Type |
Video, image and document |
| File-level Access |
Global namespace, fIle can be accessed by 3rd party application directly |
| Load Balancing |
Load balancing based on capacity and performance of each node |
| Data Recovery |
Valid data recovery instead of entire disk recovery |
| Scalability |
| Storage Expansion |
Scale-out technology, online expansion, with less than 60 seconds for expansion of a single node |
| Quota Management |
Data quota management based on users, user groups and directories, allocation of capacity on demand |
| Performance Index |
| Read/write Performance |
Sequence read/write: 4 GB/s |
| 80% read, 20% write: 3.5GB/s |
| 20% read, 80% write: 3.5GB/s |
| 50% read, 50% write: 4GB/s |
| Data Recovery Speed |
2 TB/h |
| Stream Processing Performance |
Number of video channel: 2000/node |
| Storage bandwidth: 700Mbps/node |
| Fowarding bandwidth: 700Mbps/node |
| System Management |
| Initialization |
One-click system initialization |
| Condition Monitoring |
Real time health status monitoring including processor usage, memory usage, disk capacity, etc. |
| Alert By Email |
Alarm notification of system exception by email |
| Disk replacement |
batch replacement of bad disks, avoiding the work for immediate replacement once a single disk fails |
| Interface |
| Open Interface |
POSIX, RESTful API, NFS/CIFS protocol, Dahua SDK |
| Electrical |
| Power Supply |
AC100 ~240V, 47~63Hz, Redundant power, Hot-swappable |
| Power Consumption |
<400W (include HDD) |
| Environmental |
| Operating Conditions |
-0°C ~ +40°C / Less than 80% RH |
| Strorage Conditions |
-20°C ~ +70°C / Less than 90% RH |
| Ingress Protection |
N/A |
| Vandal Resistance |
N/A |
| Construction |
| Rack support |
19-inch rack-mounted |
| Dimensions |
494mmx483mmx175mm |
| Weight |
27Kg |
| Certification |
| CE |
EN 55032, EN55024, EN50130-4, EN61000-3, IEC61000-4 |
| FCC |
Part 15 Subpart B and ICES 003 Issue6 |
