Asustor AS-204RS 4-Bay SMB NAS Server

Asustor AS-204RS 4-Bay SMB NAS Server

Asustor AS-204RS 4-Bay SMB NAS Server

B&H # AS204RS MFR # AS-204RS

Product Highlights

  • 4 x 3.5" / 2.5" SATA II & III Drive Bays
  • 1.2 GHz Intel Atom Z2520 Dual-Core
  • 1GB DDR3 RAM
  • 4 x USB 3.0 Ports
  • 2 x Gigabit Ethernet Ports
  • 1 x HDMI 1.4a Port
  • RAID 0, 1, 5, 6, 10
  • ADM 2.0 OS
  • AES 256-Bit Encryption
  • Windows, Mac, and Linux Compatible
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Asustor AS-204RS overview

  • 1Description

The AS-204RS 4-Bay SMB NAS Server from Asustor is a 4-bay rackmount NAS that can be mounted on 1U and 2U rackmount systems. It has been designed with AES 256-bit encryption for secure centralized data storage in small to medium sized businesses that will help to store, protect, and share content. Enterprise features and stability are built into the hardware design, making it a well-suited choice for growing small businesses with limited space or a limited budget. This unit has four drive bays, each of which natively supports 3.5" and 2.5" SATA III 6 Gb/s and SATA II 3 Gb/s hard drives and SSDs.

The AS-204RS is powered by a 1.2 GHz Intel Atom Z2520 Dual-Core processor, which will allow you to run multiple functions simultaneously. The built-in 1GB of DDR3 RAM will allow quick access to frequently-used files and programs. Network connectivity is achieved via the 2 x Gigabit Ethernet ports and external peripherals may be connected using the 4 x USB 3.0 ports. Additionally, there is 1 x HDMI 1.4a output for connecting this NAS to HDMI-compatible devices.

Asustor ships the AS-204RS with the ADM 2.0 operating system, which helps simplify managing your NAS, as well as accessing and sharing data. Asustor also lets users download and install add-on packages that are designed for individual or business needs. A variety of RAID modes are supported, which help provide users with data redundancy, speed, or a combination of both. Supported RAID modes include RAID 0, 1, 5, 6, and 10.

For those who use virtual environments such as VMware, Citrix and Hyper-V, the AS-204RS provides cross-platform file sharing, allowing you to easily connect to your NAS device if you are using Windows, Mac OS, UNIX, Linux, or BSD. Using backup utilities such as Backup Plan and Apple Time Machine you can easily backup data from a Windows PC or Mac directly onto NAS server. Also featured is a Network Recycle Bin. All deleted files will be moved to this bin, allowing you to restore virtually any accidentally deleted files. Moreover, it comes with service LED indicators on both the front and back of the device. After pushing the service LED button located on the front of the device, the corresponding service LED indicator on the back of the device will light up so that the NAS may easily identified within a rack. The AS-204RS 4-Bay SMB NAS Server operates on 100-240 VAC and includes an AC power cord, 2 x RJ-45 LAN (Cat 5e) cables, 16 x flat head screws (for 3.5" HDDs), and 16 x flat head screws (for 2.5" HDDs).

Cross-Platform File Sharing
ASUSTOR NAS devices provide cross-platform file sharing, allowing you to easily connect to your NAS device no matter if you are using Windows, Mac OS, or a Unix-like operating system. The transfer protocols that you may use to connect to an ASUSTOR NAS device are as follows:

Windows: CIFS/SMB, FTP, and WebDAV
Mac OS X: AFP, SMB, NFS, FTP, and WebDAV
Linux: NFS, SMB, FTP, and WebDAV

Additionally, Asustor NAS devices feature the Network Recycle Bin. Any files you delete will be moved to the Recycle Bin, allowing you to restore virtually any accidentally deleted files. Transfer protocols supported by the Recycle Bin include: CIFS/SMB, AFP, FTP, and File Explorer
Your Data is Safe with Us
You can now worry less about accidentally losing your vital documents. Asustor NAS devices provide you with a complete host of data protection and backup solutions to look after your most important information.

Using backup utilities such as Backup Plan and Apple Time Machine you can easily backup data from a Windows PC or Mac directly onto an Asustor NAS device. Asustor NAS devices also offer a variety of different RAID configurations, allowing you to select the most appropriate configuration for your security needs. Moreover, Asustor NAS devices also support a multitude of two-way sync and backup options. Besides backing up your data onto a NAS device, you can also further back up the data from a NAS device onto other devices. Asustor NAS devices support backup via the cloud, external hard drive, Rsync, and FTP. In the unfortunate event of a disaster, you will be able to recover and restore your data, thereby helping you to avoid the damage that can be caused by lost data
Hardware Maintenance - Service LED Indicator
Engineers often have trouble finding a specific server needing maintenance when faced with numerous servers in a server rack. All Asustor rackmount NAS devices come with service LED indicators on both the front and back of the device. After pushing the service LED button located on the front of the device, the corresponding service LED indicator on the back of the device will light up. Now engineers will be able to quickly locate the device without having to count the screws on their server rack or guess the position of the device. Furthermore, the service LED indicator can be turned on and off from within the ADM interface
Asustor's ADM operating system combined with an Intel processor allows the 2 series to raise read and write performance. The 2 series also provides a total of 4 x USB ports (2 x USB 3.0, 2 x USB 2.0) allowing you to simultaneously connect up to 4 x external USB hard drives to expand your storage capacity. Furthermore, the AS-2TE series comes equipped with an HDMI port and audio jack allowing your NAS to transform into a multimedia player
Eco-Friendly Design
System Automatically Enters Sleep Mode (Schedule S3)
Auto-Standby for Both Internal and External Disks
Auto Fan Control
LED Night Mode
Power Schedule: On, Off, Restart, and Sleep


Windows Read/Write (5GB file, 1GbE x 1)
Read: 112.86 MB/s
Write: 112.50 MB/s
iSCSI Read/Write (5GB file, 1GbE x 1)
Read: 102.4 MB/s
Write: 119.54 MB/s

Featured Apps

Provides both Windows ACL and Linux ACL permission configuration methods
Can enable Windows ACL for specific shared folders
Comprehensive support for Windows' 13 types of advanced permission settings
Can view Windows ACL permission settings from within ADM
Supports local users and groups
Exclusive permission reset function allows users to quickly restore default permissions
Scheduled Scans
Automatic Virus Definition Updates
Quarantine Infected Files
Asustor Portal
Supports Output for 4 Channels of Megapixel IP Camera Video Feeds
Chrome Web Browser and YouTube Integration
Downloads from Chrome Automatically Saved to the NAS
Power Control Settings: Power on, Sleep, Restart and Wake via Remote
Customizable Asustor Portal Desktop Wallpaper
Add Shortcuts to Favorite Websites
Increased TV Compatibility via Overscan and Resolution Settings
Language, Resolution, Overscan, Screensaver, Default App, VirtualBox Shortcuts Settings
Virtual Machines are Able to run the Following Operating Systems: Windows, Linux, Solaris, and Mac OS X
Virtual Machine Import Format: OVF
Virtual Machine Export Format: OVF 0.9, OVF 1.0, and OVF 2.0
Virtual Machine Snapshots
Virtual Machine HDMI Audio Output
Physical NAS Network Port can be Designated for use by Specific Virtual Machine
XBMC 12.3
Play All Media Content Stored on NAS
Video Output via HDMI
TV Shows, Movies, Apps and More
Asustor Customized Features
AiRemote Mobile App
Supports SBS 3D Playback (Side By Side)
Download Center
Supports BT(Torrent & Magnet Link), HTTP and FTP Downloads
Torrent Search
Choose Files Before a BT Task Starts
Customizable Download Schedule
Bandwidth Control
RSS Subscription and Automatic Downloading (Broadcatching)
ASUSTOR Download Assistant for Windows & Mac
AiDownload for iOS & Android
AiDownload for iOS & Android with Push Notification
Smart Download Function
Each ADM Account is Able to Individually Log in to One Dropbox Account
Supported Backup Methods: Sync
File Explorer
Web-based File Management
ISO File Mounting
Share Links
Task Monitor
Browse Files on Local PC
Thumbnail Previews
FTP Explorer
Directory Structure View with Drag & Drop Transfers
Task Monitor
Stopping of Transmission Task & Resumption of Connection
Encrypted Connections: Explicit over TLS, Implicit over TLS
FTP Site Manager
Bandwidth Control
Maximum Simultaneous Transfer Control
Google Drive
Each ADM Account can Individually Log in to One Google Account
Supported Backup Methods:
- Sync
- Directly Upload Files to Google Drive from NAS
- Directly Download Files from Google Drive to NAS
Each ADM Account is Able to Individually Log in to One HiDrive Account
Supported Backup Methods:
- Directly Upload Files to HiDrive from NAS
- Directly Download Files from HiDrive to NAS
Supported Protocols:
- Rsync
- Rsync + SSH
  • Currently only available for Windows Chrome. Installation of the VLC media player browser plug-in is required.
  • Supports the use of DVB-T/DTMB digital TV dongles to stream and record scheduled digital TV programs.
  • Only certain countries and territories support DVB-T
  • Supports multiple TV tuners. A single TV tuner can only stream or record from one channel at a time.
  • Playback of High-Definition Video Files
  • Supports External Subtitles and Multiple Audio Channels
  • Supports the Browsing of Photos
  • Recently Added, Recently Watched and Favorite Browsing Categories
  • Supports Browsing of Electronic Program Guides
  • Edit and Manage Recording Tasks
  • Configure Recording Tasks: Time, Length and Recording Frequency
  • No Need for an EPG, Just Select a Channel and Time to Begin Recording
  • Recording Task Log
  • Configurable Favorite Programs to Record
  • Supported video formats: avi, flv, mov, mp4, mkv, mka, ts, mpg, ra, ram, rm, rv, rmvb
  • Supported video codec: aac_latm, aac, ac3_fixed, ac3, dca, eac3, h.264, mlp, mp1, mp2, mp3, mpeg2video, mpeg4, treuhd, vc1, wmav2, wmv3
  • Supported external subtitle formats: srt, ass, ssa
  • Supported photo formats: jpg, jpeg, bmp, png, gif, tif
  • iTunes Server
    For iTunes on Mac & Windows
    Supports AirPlay
    Supports iOS Remote Pairing
    Supported Audio Formats: AIF, M4A (AAC & Apple Losless), M4P, M4R, MP3, WAV
    Supported Video Formats: M4V, MOV, MP4
    Supported Playlist Formats: M3U, WPL
    Mail Server
    Each ADM Account Can Become an Independent Email Account
    Email Activity Monitor (Over 1 Week, 1/3/6 Months)
    Provides SMTP, IMAP and POP3 Mail Protocols
    Supports SMTP Relay and Verification
    SMTP-SSL Secure Connections
    Spam Filter and Black List Settings
    Antivirus Scanning for Emails
    Email Alias Creation and Mapping
    Monitoring of Mail Queue
    Mail Service Activity Log
    Exclusive Email Backup Mechanism
    Auto-Forwarding and Auto-Response Protocols
    Photo Gallery
    Social Media Support: Facebook, Google+, Twitter, Plurk
    Manage Photo Album Access Rights: Public Access, Restricted to Certain Accounts, Album Password
    Customizable Photo Album Cover
    Supports Display of Image EXIF Values, Editable Description, Image Rotation
    Supports Playing Images via Slideshow
    Supports Downloading of Image Source Files
    Supports User Comments
    Supports Tagging of Photos
    Search for Photos via Keyword or Tag
    Supported Image Format: JPG, PNG, GIF
    Surveillance Center
    Live Monitoring (4 Free Channels)
    Multiple Channel Playback with Audio
    Supported Browsers: Internet Explorer, Chrome, FireFox (Windows only)
    Event Notification
    Supports Local Output of 4 Video Feed Channels
    Recording via Schedule and Event Detection
    Add Additional IP Camera Channels
    Max. Number of IP Cameras (Including 4 Free Channels):
    - AS70 Series: 24
    - AS50 / 51 Series: 16
    - AS-6 Series: 12
    - AS-2 / 3 Series: 8
    Import Personal/Public Music Collection
    Personal/Public Music Collection Permission Control
    Playlist Editor
    ID3 Tag Editor
    Local Speaker Support: HDMI, USB, Audio Jack
    Supported Audio Formats for Browser: MP3, WAV, Ogg
    Supported Audio Formats for Transcoding Through Browser: AIFF, Flac
    Supported Audio Formats for Local Speaker: MP3, WAV, Ogg, AIFF, Flac ASUS DAC Support
    Download from YouTube, Vimeo, YouKu, Tudou and More
    Selectable the Video Type and Quality
    Automatic Downloads with YouTube Subscriptions
    Preview Downloads in Progress
    Online Playback
    UPnP Media Server
  • Supports PS3 and other Digital Media Player Capable Devices
  • Supports On-The-Fly Transcoding for Most RAW Images and Audio(OGG, FLAC)
  • Supported Image Formats: BMP, GIF, ICO, JPG, PNG, PSD, TIF, RAW Image⁴ (3FR, ARW, CR2, CRW, DCR, DNG, ERF, KDC, MEF, MOS, MRW, NEF, NRW, ORF, PEF, RAF, RAW, RW2, SR2, X3F)
  • Supported Audio Formats: 3GP, AAC, AC3, AIFC, AIFF, AMR, APE, AU, AWB, FLAC1, M4A, M4R, MP2, MP3, OGG Vorbis1, PCM, WAV, WMA
  • Supported Video Formats: 3GP, 3G2, ASF, AVI, DAT, FLV, ISO, M2T, M2V, M2TS, M4V, MKV, MPv4, MPEG1, MPEG2, MPEG4, MTS, MOV, QT, SWF, TP, TRP, TS, VOB, WMV, RMVB, VDR, MPE
  • VPN Client
    Supported VPN Protocols: PPTP, OpenVPN
    Transmission Package Monitor
    PPTP Authentication: PAP, CHAP, MS CHAP, MS CHAP2
    PPTP Encryption: No MPPE, MPPE (40, 128 bit), Maximum MPPE (128 bit)
    OpenVPN Port Control
    OpenVPN Link Compression
    VPN Server
    Supports PPTP and OpenVPN Protocols
    View Current Connections & Ability to Disconnect Suspicious Connections
    Comprehensive Connection Log
    In the Box
    Asustor AS-204RS 4-Bay SMB NAS Server
  • AC Power Cord
  • 2 x RJ-45 LAN Cable (Cat 5e)
  • 16 x Flat Head Screws (for 3.5" HDD
  • 16 x Flat Head Screws (for 2.5" HDD)
  • Limited 3-Year Warranty
  • Table of Contents
    • 1Description

    Asustor AS-204RS specs

    Hardware Specifications
    Number of Bays 4
    CPU 1.2 GHz Intel Atom Z2520 Dual-Core
    Memory 1 GB DDR3
    HDD 4 x 2.5" / 3.5" SATA II / SATA III HDDs or SSDs
    Hot Swappable Drives Yes
    USB 4 x USB 3.0
    Network 2 x Gigabit Ethernet
    HDMI Output 1 x HDMI 1.4a
    System Fan 2 x 40 mm
    Input Power Voltage 100 - 240 VAC
    Certifications FCC, CE, VCCI, BSMI, C-TICK
    Operational Details
    Power Consumption Operation: 41.6 W
    Disk Hibernation: 25.8 W
    Sleep Mode: 0.7 W
    Temperature Operational Temperature: 40 to 95°F / 4 to 35°C
    Humidity 40 to 95°F / 4 to 35°C
    Software & Features
    Operating System ADM 2.0 and later
    Built-in App Central for Various Apps
    Supported OS Windows XP, Vista, 7, 8, Server 2003, Server 2008, Server 2012
    Mac OS X 10.6 and later
    UNIX, Linux, and BSD
    Supported Languages English, German, French, Italian, Spanish, Danish, Norwegian, Swedish, Dutch, Russian, Polish, Hungarian, Brazilian Portuguese, Portuguese, Turkish, Czech, Japanese, Korean, Chinese (Traditional), Chinese (Simplified)
    Supported Browsers Internet Explorer 9 or later
    Network Protocols CIFS/SMB, AFP, NFS, FTP, WebDAV, Rsync, SSH, SFTP, iSCSI, HTTP, HTTPS, SMB 2.0, TFTP, Proxy
    File System Internal Disk: EXT4
    External Disk: FAT32, NTFS, EXT3, EXT4, HFS+
    Storage Management Supports Multiple Volumes with Spare Disks
    Volume Type: Single disk, JBOD, RAID 0, RAID 1, RAID 5, RAID 6, RAID 10
    Support for Online RAID Level Migration
    Support for Online RAID Capacity Expansion
    Support for Online RAID Capacity Expansion
    MyArchive Insert Hard Disk & Immediately Access Files
    Transfer or Exchange Terabytes of Data via the Internal Hot-Swap SATA Interface
    Up to 2 Bays Reserved for MyArchive Docking Purposes
    iSCSI Maximum Targets: 256
    Maximum LUNs: 256
    Target Masking
    LUN Mapping
    ISO File Mounting
    Supports MCS
    Persistent (SCSI-3) Reservations
    Disk Management Scheduled Bad Block Scans
    Scheduled S.M.A.R.T Scans
    Network TCP/IP (IPv4 & IPv6)
    Link Aggregation: Supports 802.3ad and Six Other Modes for Load Balancing and/or Network Failover
    Jumbo Frame (MTU)
    Cloud Connect
    Wireless Network
    DDNS and EZ-Router Compatibility
    Supports Wake-on-LAN (WOL)
    Backup Solutions Rsync (Remote Sync) Backup
    Cloud Backup
    FTP Backup
    External Backup
    One Touch Backup
    System Administration Log Type: System Log, Connection Log, File Access Log
    Real-time Online User Monitor
    Real-time System Monitor
    Network Recycle Bin
    User Quota
    Virtual Drive (ISO Mounting, Maximum 16)
    UPS Support
    Access Control Maximum Number of Users: 4,096
    Maximum Number of Groups: 512
    Maximum Number of Shared Folders: 512
    Maximum Number of Concurrent Connections: 512
    Supports Windows Active Directory
    Security AES 256-Bit Folder Encryption
    Firewall: Prevent Unauthorized Access
    Network Defender: Prevent Network Attacks
    Alert Notifications: E-mail, SMS
    Encrypted Connections: HTTPS, FTP over SSL/TLS, SSH, SFTP, Rsync over SSH
    External Devices Supports USB/eSATA3 External Storage Devices
    USB Wi-Fi Dongle Support
    Bluetooth Dongle/Speaker Support
    USB Printer Support
    USB DAC/IR Receiver/Keyboard/Mouse Support
    Dimensions & Weight
    Dimensions 1.7 x 17.3 x 20.3" / 44.0 x 439.0 x 515.0 mm
    Weight 16.7 lb / 7.6 kg
    Packaging Info
    Package Weight 26.46 lb
    Box Dimensions (LxWxH) 26.89 x 22.52 x 7.24"

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