HARDWARE SPECIFICATION 

CPU:

• Intel Atom C3538 Quad-Core 2.1GHz x64 64-bit processor for reliable enterprise-grade performance.

Memory:

• 8GB SO-DIMM DDR4 memory pre-installed (1 × 8GB), with 4 memory slots supporting expansion up to 128GB (4 × 32GB), mixed-capacity memory modules, and 8GB eMMC flash memory.

Storage:

• Supports 4 drive bays compatible with 3.5" SATA HDD, 2.5" SATA HDD, and 2.5" SATA SSD. Expandable up to 20 drive bays with an expansion unit and supports hot-swappable drives.

External Ports:

• Includes 4 × USB 3.2 Gen 1 ports, 2 × Gigabit Ethernet (1G/100M) ports, 2 × 2.5 Gigabit Ethernet (2.5G/1G/100M) ports, and 1 × PCIe 3.0 x8 expansion slot (black, x4 link). Multimedia output is not available.

Others:

• Equipped with 2 × 40mm system fans, AS6504RS with 250W ×1 power supply, AS6504RD with 250W ×2 redundant power supplies, 100V–240V AC input voltage support, redundant power supply, service LED indicator, FCC, CE, VCCI, BSMI, C-TICK, KCC, and BIS certifications, and backed by a 3-year warranty.

Operation:

• AS6504RS consumes 47.7W during operation and 28.4W during disk hibernation, while AS6504RD consumes 65W during operation and 42.4W during disk hibernation. Supports operating temperatures from 0°C to 40°C, storage temperatures from -20°C to 70°C, and humidity levels from 5% to 95% RH.

Size and Weight:

• Measures 44(H) × 439(W) × 515(D) mm. Weight: AS6504RS – 7.85 kg (17.27 lbs); AS6504RD – 9.3 kg (20.46 lbs).

SOFTWARE SPECIFICATION

General Specifications:

• Supports Windows 10, Windows 11, Windows Server 2016, Windows Server 2019, Windows Server 2022, macOS, UNIX, Linux, and BSD operating systems. Supports multiple languages including Deutsch, English, Français, Italiano, Nederlands, Русский, 日本語, 한글, 简体中文, 繁體中文, Česká, Polski, Svenska, Dansk, Norsk, Suomi, Português, Türkçe, Español, Magyar, and ภาษาไทย.

Supported Browsers:

• Compatible with Firefox, Chrome, Safari, and Microsoft Edge for web-based management.

Network:

• Supports CIFS/SMB, SMB 2.0/3.0, AFP, NFS, FTP (Unicode Supported), TFTP, WebDAV, Rsync, SSH, SFTP, iSCSI/IP-SAN, HTTP, HTTPS, Proxy, SNMP, Syslog, TCP/IP (IPv4 & IPv6), Link Aggregation (802.3ad and six additional load balancing/network failover modes), Jumbo Frame (MTU), VLAN, EZ Connect, Wireless Network, DDNS, EZ-Router, Wake-on-LAN (WOL), and Wake-on-WAN (WOW).

File Management & Sharing:

• Supports EXT4 and Btrfs for internal disks and FAT32, NTFS, EXT3, EXT4, HFS+, exFAT, and Btrfs for external disks. Includes web-based file management, ISO file mounting, share links, task monitor, local PC file browsing, thumbnail previews, external optical drive support, and video playback.

Network Recycle Bin:

• Supports shared folder-based recycle bin, preserves original directory structure and file permissions, provides one-click restore, scheduled emptying, filtering by file size and extension, and deletion settings based on file size and file date.

Storage Management:

• Supports Single, JBOD, RAID 0, RAID 1, RAID 5, RAID 6, and RAID 10. Supports RAID migration from Single to RAID 1, RAID 5, RAID 6, RAID 10, RAID 1 to RAID 5, RAID 6, RAID 10, and RAID 5 to RAID 6. Supports storage expansion by complete drive replacement for RAID 1, RAID 5, RAID 6, and RAID 10, RAID 5 expansion by drive addition, and RAID spare support for RAID 1 and RAID 5.

MyArchive:

• Supports hot-swappable MyArchive drives, works with any empty ASUSTOR NAS bay, supports EXT4, NTFS, HFS+, Btrfs, and exFAT file systems, AES 256-bit encryption on EXT4 and Btrfs, Btrfs snapshots, and USB key decryption.

iSCSI/IP-SAN:

• Supports up to 256 iSCSI targets, 512 LUNs, 256 snapshot versions per LUN, Target Masking, LUN Mapping, ISO File Mounting, MPIO support, and Persistent (SCSI-3) Reservations.

Disk Management:

• Includes Scheduled Bad Block Scans and Scheduled S.M.A.R.T. Scans for proactive drive health monitoring.

Access & Security:

• Supports up to 4096 users, 512 groups, 512 shared folders, and 512 concurrent connections. Includes Windows Active Directory, LDAP, Windows ACL and Linux ACL permission management, advanced Windows permission settings, local user and group support, and an exclusive permission reset function.

System Administration:

• Supports System Log, Connection Log, File Access Log, Real-time Online User Monitor, Real-time System Monitor, User Quota, Virtual Drive (ISO Mounting up to 16), and UPS support.

Security:

• Features AES 256-Bit Encryption, Firewall protection, E-mail and SMS alert notifications, HTTPS, FTP over SSL/TLS, SSH, SFTP, Rsync over SSH, Built-in Hardware Encryption Engine, and RAID Scrubbing to detect the integrity and consistency of RAID 5 and RAID 6 drive data.

Network Defender:

• Supports auto blacklist, trusted list, black/white list, and IP, IP range, and geolocation-based access control.

Backup:

• Supports Rsync (Remote Sync) Backup, Cloud Backup, FTP Backup, External Backup, One Touch Backup, EZ Sync, and SMB Backup.

Snapshots:

• Supports Btrfs Snapshots with up to 256 snapshots and iSCSI LUN snapshots.

Others:

• Includes ASUSTOR Highlights such as System Migration, EZ Connect, Dr. ASUSTOR, 2-way Backup, and Task Monitor.

Eco-Friendly Design:

• Features auto-standby for both internal and external disks, auto fan control, LED Night Mode, and scheduled Power On, Off, and Restart.

Energy Control:

• Supports configurable disk hibernation wait time for improved energy efficiency.