- Brand Name: Western Digital
- Model: WDA4NC40000N
- Hard Disk Size: 4000 GB
- Hardware Platform: Mac
- Hard Disk Interface: USB 2.0
Product DetailsCapacity: 4 TB
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This high-speed network-attached storage system with capacities up to 8 TB and a space-saving footprint gives you all the benefits of a big time data center without the need for a big time IT department. Perfect for centralizing and sharing data or streaming media on a small office or home network.
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![]() For small workgroups of 5 to 10 this system offers compact, centralized storage, accessible View larger ![]() Click here for the 360° view |
Big capacity, small footprint.
This high-speed network-attached storage system with capacities up to 8 TB and a space-saving footprint gives you all the benefits of a big time data center without the need for a big time IT department. Perfect for centralizing and sharing data and multimedia files on a small office or home network.
RAID capability
Offers multiple RAID configurations for data protection and speed -- RAID 0 (Striped), RAID 1 (Mirrored) and RAID 5. The RAID 5 mode is the recommended mode to achieve both high-performance and data protection through redundancy. Find out more about RAID
High-speed access, Ethernet connectivity
Provides data transfer rates up to 1000 Mbit/s when used in a GigE network. Gigabit networking and transfer rates are five to six times faster than other network storage systems. This performance is comparable to USB 2.0 direct-attached storage.
Easy setup and discovery
An intuitive set-up wizard and easy-to-use discovery tool makes installation a snap.
E-mail alert system
Monitors drive and system health and sends you an e-mail if a problem is detected.
Stream digital media anywhere in your home
Built-in media server for streaming music, photos and movies to any DLNA certified multimedia device such as Playstation® 3, Xbox 360®, wireless digital picture frames, and connected audio receivers. DLNA 1.5 & UPnP certified.
iTunes® server support
Centralize your music collection and stream to a Mac® or Windows® PC using iTunes software.
Build your collection
Centralize digital media from all your computers into one vast media library. Now anyone can enjoy your collection from anywhere in your home
Microsoft Active Directory support
Will join an Active Directory domain to utilize AD users and groups.
Push-button transfer
Plug a USB drive into the front-mounted USB 2.0 port and push a button to automatically transfer all the data on the drive to the WD ShareSpace system.
Automatic network backup software
Set up continuous backup for the computers* in your network using the included automatic backup software. Select the files you want to back up, then set it and forget it; every time you save a change it's automatically backed up. *3 software licenses included.
![]() Easy access to the drives inside. View larger |
Remote access software
Access your files anywhere, anytime using MioNet® remote access services from WD.
Download manager
Supports scheduled download through FTP and HTTP. Simultaneously manage multiple download tasks.
Built-in FTP server
Set up your own FTP server. Manage the access authority and share your files with your friends or customers easily.
Three USB 2.0 ports
Two USB ports on the back to connect additional USB hard drives for backup or additional network storage. One USB port on the front for push button transfer.
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Cooler, quieter, eco-friendlier
Equipped with WD drives using WD GreenPower™ technology, this system, with its efficient cooling architecture, and power saving mode, consumes up to 33% less power, is reliably cool, and remarkably quiet.
(Tests based on comparison between a 1 TB dual-drive system using 7200 RPM drives and a 1 TB dual-drive system using WD’s GreenPower drives.)
Windows Vista™ ready
Works seamlessly with Windows Vista to provide easy setup and automatic discovery.
Power failure protection
Connect this system to your Universal Power Supply (UPS). If a power failure occurs, the system will shut down gracefully, protecting you from data loss.
Easy maintenance
Add or swap out drives quickly and easily.
High-speed Gigabit Ethernet connection |
Network storage manager
Manage your system configuration, create user IDs, passwords, security permissions, and quotas.
Compatibility
Windows
*Compatibility may vary depending on user's hardware configuration and operating system.
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What is RAID?
RAID is an acronym for Redundant Array of Independent Disks. With RAID enabled on a storage system you can connect two or more drives in the system so that they act like one big fast drive or set them up so that one drive in the system is used to automatically and instantaneously duplicate (or mirror) your data for real-time backup.
![]() RAID Mode Comparison |
Advantages of RAID
There are three reasons you might want a RAID system of drives.
1. You need tons of storage space and you need it to be fast. (RAID 0)
2. You want to instantaneously and automatically backup your data. (RAID 1)
3. You want both. (RAID 5)
Which RAID mode should I use?
1. Speed (RAID 0)
Set in high-performance mode (also called striped mode or RAID 0) the storage system gives you the power you need when you're:
Why is RAID 0 so fast? It’s a bit complicated, but suffice it to say that two or more heads, or in this case, drives, are better than one. Picture multiple hoses filling a bucket at the same time or several men bailing a boat and you can understand why two drives striped are faster than one. Data is saved (striped) across both drives and accessed in parallel by all the drives so you get higher data transfer rates on large data accesses and higher input/output rates on small data accesses.
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2. Data protection (RAID 1)
Set the system to data protection mode (also known as mirrored mode or RAID 1) and the capacity is divided in half. Half of the capacity is used to store your data and half is used for a duplicate copy.
Why do I want that kind of redundancy? It’s your data, your family pictures, your movie of baby’s first steps, your first novel. Is it important? You decide. If it is, then RAID mirroring is for you.
3. Data protection and speed (RAID 5)
In systems with three or more drives, (like our 4 TB WD ShareSpace Network Storage System) we recommend that you set the system to RAID 5. This gives you the best of both worlds: fast performance by striping data across all drives; data protection by dedicating a quarter of each drive to fault tolerance leaving three quarters of the system capacity is available for data storage.