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AN4L+BBKU - 64bit 4 Bay Backup Appliance Dual Gigabit NAS Server (Black)


The AccuNAS AN4L+BBKU is a backup appliance designed to use in network environment for data backup. It supports Windows, MAC and Linux Network in SMB, AFP and NFS network, consolidate data storage from different network, while backing up the data using build-in support of replication, or copy the data within to different location. AN4L+BBKU support backup within itself, as well as backup to another unit of AccuNAS / EliteNAS storage on schedule. Backup support with up to 10 different revision to unsure no data is accentually deleted. Front USB 3.0 ports allow removable hard drives, such TowerSTOR and MobileSTOR USB 3.0 series (TS1UT+B, MS1UT+B, TR4UT+B, TR5UT+B, and TR8UT+B) as external copy of data. Optional RDX docking station or LTO Tape drives is available for offsite, offline data backup.

AN4L+BBKU build-in with 2 network port for failover, as well as 4 hard drives, up to 16TB in RAID 0, 1, 10, 5 and 6 for performance and protection in RAID applications. AN4L+BBKU is half of the wide of the 4U rackmount, and optional rackmount kit (part#: CS-SAN-VA004RK) available to mounting two units into one 4U space. This innovative design allows two units back up each other in a data center or production environment. Built upon AccuNAS and EliteNAS network storage operating systems, AN4L+BBKU provide many other features, such as FTP server, ADS / LDAP supports as well as iSCSI target and initiator support. AN4L+BBKU is an ideal choice for NAS and unattended data backup in the network.

Note: Sans Digital recommends the use of enterprise hard drives when in use with any RAID controller applications. Standard desktop or green desktop drive may not be supported and may compromise RAID system stability and performance. For more information on the difference between RAID and desktop hard drives, please see the Western Digital knowledge base. For a list of compatible RAID Edition SATA hard drives, please CLICK HERE.

Important Announcement for Shell Shock Vulnerability: Click here for release note and click here to download the update patch.


Backup Appliance in a box
Build-in replication features in a box. Files saves in the units will automatically backup to different volume of hard drives, USB 3.0 storage, optional LTO tape drive modules, optional RDX modules, or second units on the same or remote network.

Dual Gigabit and RAID Hard Drives Protection
AN4L+BBKU is designed with simple setup and easy maintenance features in mind. Features such as installation wizard for easy implementation out of the box, convenient web-based management for local or remote configuration, Dual 10/100/1000 gigabit ports supporting teaming and fail-over redundancy plus RAID protection for your data storage making the AN4L+BBKU a very robust yet easy to use Windows/MAC/Linux sharing NAS server system.

Feature Rich Data Storage - Built-in Snapshot, Folder Replication and iSCSI

In comparison to other products in the market, AN4L+BBKU is bundled with many enterprise level advanced features without  the additional cost. For example, iSCSI target support for iSCSI applications, iSCSI initiator support for future data storage expansion, folder to folder replication, scheduled or on-demand volume snapshot and local tape backup support just to name a few.

iSCSI Support for VMware

To take advantage of centralized storage for all virtual machines in VMware ESX or Vsphere, the AN4L+BBKU can be uses as a focal storage point for the VMWare ESX or ESXi sever hosting multiple virtual machines.  Utilizing the AN4L+BBKU as an iSCSI target storage system for the VMware ESX/ESXi server, the AN4L+BBKU is ready for your VMware storage virtualization needs.


  • Backup storage appliance support schedule replication backup from  
  • Operating system specifically design for Windows/MAC/Linux sharing NAS server and iSCSI application.
  • 4GB DDR3 memory. 
  • Supports up to a total of 16TB (Raw) SATA hard drive (4TB x 4 HDD).
  • RAID 0, 1, 1+0, 5 and 6 with spare.
  • Dual Gigabit Ethernet ports.
  • Convenient setup and easy maintenance.
    • IP discovery tools for easy deployment.
    • Web GUI configuration interface supporting Internet Explorer and Firefox browsers.
    • Informational Event Log for diagnostics.
    • Supports local user account.
    • Supports Windows Active Directory Service or Primary Domain Server and Workgroup.
    • Supports HTTPS/SSL service.
  • Storage protection.
    • Designed with Linux based Journaling file system (XFS).
    • Folder to folder replication supporting scheduling with multiple versions or full replication with bandwidth control.
    • Supports scheduled or on-demand volume snapshot.
    • System configuration backup and restore.
    • Supports Local Tape backup, 3rd party backup agent.
  • Supports iSCSI.
    • Supports iSCSI target and initiator.
    • Supports VMware ESX Server 4.0/4.1/5.0/5.1 or Microsoft Hyper-V Server or Citrix XGen Server.


 Model  AN4L+BBKU
 Form Factor  4 Bay Enclosure
 Optional slot for RDX docking station or LTO drives
 Memory  4GB DDR-3 Memory
 RAID Level  0, 1, 1+0, 5, 6
 RAID Engine  Software Embedded RAID Engine
 Maximum Capacity  32TB
 Hot-Swappable  Yes
 Ethernet Ports  10/100/1000 Gigabit Ethernet Ports x2 (Intel Chipset Gigabit Ethernet)
 Hard Drive Trays Supported  4 x SATA HDD trays
 Power Supply  200W (100V to 230V)
 Control Interface  Web Browser - Supporting IE and Firefox
 Dimension (in)  12.0"W x 8.0"D x 8.5"H
 Weight (lb)  13.0
 Safety Regulations  CE, FCC, UL, RoHS
 Limited Warranty  1 Year
 Package Contents  AN4L+BBKU (1)
 Power Cable (1)
 CD & Manual (1)
 HDD Tray Key (1)
 Removable Trays (4)

Available Models

 OS  64bit Windows/MAC/Linux File Sharing NAS + iSCSI OS specifically made for NAS and iSCSI application
 Memory  4GB DDR-3 Memory
 RAID Structure  RAID 0, 1, 1+0, 5, 6
 Ethernet Port  10/100/1000 Gigabit Ethernet *2
 Hard Drives Trays  4 * Hot-Swappable SATA Hard Drive
 Hard Drives  No HDD
 Total Storage  N/A  4TB  8TB  12TB  16TB 

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