NAStorage 4520R,8520R
| Model | Nastorage 4520R | Nastorage 8520R |
| appearance |  |
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| Hardware | T7500(2.26/4M/B00MHz) | |
| Support 2GB RAM, up to 4GB | ||
| Two Integrated 10/100/1000 M Gigabit Ethernet ports | ||
| Redundant/250w Power Supply | Redundant/350W Power Supply | |
| PCI-E by 8 slot × 1 | ||
| Storage | Support 4 hot-swappable SATA High-capacity hard disk drives | Support 8 hot-swappable SATA II high- capacity hard disk drives |
| Support CD-R/RW, DVD+RW, DVD-DL BlU-ray (Optional) | ||
| Integrate ‘Disc server + Data Archiving1 to store over a thousand discs* | ||
| Support USB 1.1/2.0, USB Pan Drive Device (SmartSync) | ||
| Network Environment | Can run in most OS | |
| Network iProtocols | Most protocal supported | |
| System iManagement | Multi-lingual web-based interface for system administration | |
| LCD console for setting IP addresses and displaying system Information | ||
| User quota and folder quota control | ||
| Environmental monitoring of system/CPU temperature, CPU fan speed and CPU ivoltages | ||
| System monitoring of CPU/ memory usage and LAN1 /LAN2 throughput | ||
| NAStart software utility for quick setup and system configuration backup | ||
| Snapshot technology for maintaining consistent backup Images of file system up to 256 isnapshot standard * | ||
| E-mall notification, SNMP management (MIBII) and system buzzer alerts | ||
| Data Protection | RAID 0,1,5,6,10 and JBOD with global hot-spare and RAID expansion | |
| NAS-to-NAS data synchronization with SmartSync | ||
| Advanced RAID bad sector recovery mechanism | ||
| Local tape backup with SCSI tape drive support | ||
| Network iSecurity | Build-in Trend Micro antivirus software | |
| Integrate with Microsoft Windows NT/2000/2003/2008/7 Domain and Active Directory environment | ||
| Support UNIX Network Information Service (NIS) | ||
| Support Access Control List (ACL) | ||
| Secure Sockets Layer (SSL) 128-bit encryption | ||
| Operating Environment | Localized web-pages，Unicode UTF-8 | |
| Operating temperature: 0 – 4°C | ||
| Operating Humidity: 10 – 80% non-condensing | ||