24-HDD Cloud Storage Node

> Intel IvyBridge processor
> Asymmetric distributed clustering architecture
> Built-in dedicated cloud storage opearating system
> 24 HDDs, SATA/SAS, hot-swap
> Device-level fault tolerance
> Load balancing based on HDD capacity and performance
> Modular & Cableless design
> Redundant power supply
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


Number of Disks 24
Storage Network type 4 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
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
Open Interface POSIX, RESTful API, NFS/CIFS protocol, Dahua SDK
Power Supply AC100 ~240V, 47~63Hz, Redundant power, Hot-swappable
Power Consumption <400W (include HDD)
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
Rack support 19-inch rack-mounted
Dimensions 494mmx483mmx175mm
Weight 27Kg
CE EN 55032, EN55024, EN50130-4, EN61000-3, IEC61000-4
FCC Part 15 Subpart B and ICES 003 Issue6