WD My Cloud EX4

4 x Hot Swappable Drive Bays
2.0GHz Processor
512MB RAM
2 x Gigabit Ethernet Ports
2 x USB 3.0 Expansion Ports

RAID 0, 1, 5, 10, JBOD Configurations
WD Device Management Dashboard
Cloud & LAN / WAN Backup Options

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Capacity	0 TB, 8 TB, 12 TB, 16 TB
Interface	2 x Gigabit Ethernet 2 x USB 3.0 Ports
Drive Bays	4 x 3.5 inch hard drive bays, hot swap capable, trayless design
Processor	2.0 GHz
Memory	512 MB DDR3
System Requirements	Windows 8.1 or earlier, Windows 7, Windows Vista or Windows XP (SP 3) operating systems Mac OS X Mavericks, Mountain Lion, Lion or Snow Leopard operating systems DLNA/UPnP devices for streaming Router with Internet connection
Supported Web Browsers	Internet Explorer 8 or higher Safari 6 or higher Firefox 21 or higher Google Chrome 27 and later on supported Windows and Mac OS platforms
Network Protocols	DHCP client or static IP NTP client Dynamic DNS (DDNS) Apple Bonjour and Windows Rally Jumbo frame support VLAN (802.1Q) UPnP port forwarding iPv4/iPv6 iSCSI SSH
Network File Services	OS Supports: • Windows XP Home/ Pro (SP 3) • Windows Vista/7/8 (all versions) • Mac OS X Mavericks, Mountain Lion, Lion and Snow Leopard CIFS/SMB for Windows, Mac OS X and Linux NFSv3 for Linux and UNIX AFP for Mac OS X Microsoft Distributed File System (DFS) WebDAV Server
Security	Active directory support for Windows server 2003/ 2008/ 2012 Volume encryption (25px6 bit AES)
File System	EXT4 for internal HDD Supports the following formats for externally attached USB drives • FAT/FAT32 • NTFS (read and write capability) • HFS+J (case sensitive) • Linux EXT2, EXT3, EXT4
FTP Server	Support port setting Set port range of passive FTP Option to report external IP in PASV mode Client language selection Anonymous FTP Secure FTP support Support File eXchange Protocol (FXP) FTP bandwidth restriction (upstream/downstream) IP address block (block access from undesired IP address)
Download Management	HTTP downloads from a URL to a user specified folder on the NAS FTP downloads of files or folders from an FTP server to another files/folders on the NAS P2P torrent download manager
Disk Management	RAID 0/1/5 10/ 5+; JBOD; spanning RAID migration: • JBOD to RAID 1 • JBOD to RAID 5 • RAID 1 to RAID 5 Hot swapping (RAID 1) Disk roaming Array roaming
Power Management	Drive spin-up/down (including attached WD USB drives) Automatic power recovery Scheduled power on/off Graceful shutdown on UPS low battery Fan control Network UPS Wake On LAN
Remote Access	My Cloud and WD Photos mobile apps My Cloud desktop app Web access
User/Group Management	Max no. of users: 512 for Samba, 800 for ADS Max no. of user groups: 64 for Samba, 200 for ADS Max no. of network shares:128 Supports up to 10 concurrent CIFS connections User/group assignment for network sharing/FTP Quotas for groups or users Assignment of users to multiple groups Batch assignment of users to groups Batch user creation Importing users (CSV delimited format)
Backup Management	Remote backups: Backup to a My Cloud EX4 or My Cloud EX4 locally or remotely Apple Time Machine support Backup internal files or folders of the device to other files/folders on the NAS Cloud-based backup services • Amazon S3 (http://aws.amazon.com/s3/) • ElephantDrive (http://home.elephantdrive.com/welcome/wdc/) Disk sync management for the attached USB ports
System Management	LCD display information: • IP Address of connected server (and friendly name) • Fan monitor • System temperature monitor • Disk monitor • Disk volume monitor • Ethernet plug monitor • Device uptime • Capacity remaining • Firmware version System status: Device Information • Capacity usage status for the external storage • File category breakdown of how much video, photo, music is stored Alert notifications • Event UI message • UI Alert (with message acknowledgment required) • Email notice • QuickView pop-up message • RED LED status Network Recycle • Support Windows CIFS • Support Apple AFP System/FTP Log (Syslog Client) HTTP/S (Web) Administration Interface (HTTP Server) Firmware upgrade Configuration backup and restore SNMPv2 System Information • CPU percentage • RAM usage • Network performance in MB/s
USB Port	Supports UPS monitoring Supports external storage device Supports MTP (Media Transfer Protocol) and PTP (Picture Transfer Protocol)
Media Streaming	UPnP AV media server (Twonky v7.2) DLNA 1.5px certification Supports WD TV Live, Xbox 370, PlayStation 3, Windows 8, connected TVs, Blu-ray players & digital picture frames iTunes support
iSCSI	iSCSI target • CHAP authentication • iSNS (Internet Storage Name Service) • Up to 64 iSCSI targets Volume virtualization: NAS can be configured as an iSCSI initiator and capable of mapping any iSCSI target of the other device to be one virtual volume. • Virtual disk drive (via iSCSI initiator) • Max number of virtual disk drives supported is eight
Power Supply	AC input voltage: 100 V to 230 VAC AC input frequency: 50 to 70 Hz DC output voltage: 12 VDC, 3 A
Temperature	Operating Temperature: 41 to 95°F / 5 to 35°C Non-Operating Temperature: -4 to 149°F / -20 to 65px°C
Dimensions (HxWxL)	6.75px x 6.10 x 3.9" / 17.145px x 15px.494 x 9.906 cm
Weight	7.2 lb / 3.3 kg