Manufacturer Drobo iomega
Model DRDR4A21 34763
Lowest Price $609.99 Compare Drobo DRDR4A21 prices $99.99 Compare iomega 34763 prices
Warranty 2 years limited 3 years limited


RJ45 Ports 1 x 10/100/1000M 1 x 10/100/1000M
USB Ports 1 x USB 2.0 (type A) 2 x USB2.0
eSATA Ports Yes Yes
Other Ports 1 VGA (recovery only) 1 x VGA


Drive Bays 2 4
Hard Disk Interface 2 x SATA 4 x SATA
Hard Disk Size 4TB 1TB
Rotational Speed 7200RPM 7200RPM


World\'s Most Expandable USB 3.0 Array

BeyondRAID Technology

Protection from Two Drive Failures

Self-Healing Technology

Storage Capacity: 10TB Maximum

Drives: Accommodates from one to five 3.5" SATA I / SATA II hard drives of any manufacturer, capacity, spindle speed, and/or cache. No carriers or tools required.

Idle system (standby, drives off) = 12 watts
Typical busy system (four drives) = 56 watts

File System Options
Windows: NTFS
Mac OS X: HFS+
Cross-Platform: FAT32
Linux: EXT3

Operating System Support:
Windows 2008 Server
Windows 2003 Server
Windows XP
Windows Vista
Windows 7
Mac OS 10.5 or higher
Linux* using EXT3

*Linux support currently in Beta
Gigabit Ethernet connectivity combined with a high performing Dual Core processor

User friendly web-based management interface

Web Interface accessible in 16 supported languages

Remote Access

Powerful Backup Functionality

Personal/Public Cloud Backup

Cloud Disaster Recovery

Time Machine Support

Replication / Device to Device Copy Jobs

Reporting: Email alerts provide up-to-the-minute updates on the status of your device even when you are away from your computer.

Built in Audio Video Media Server - UPnP DLNA Certified

Social Media Sharing Made Easy (supports Facebook, YouTube and Flick)

Three step setup - simply plug it into your router, power it on and install the software CD. The friendly interface screen makes it easy for all family members to use.

Easy menus and settings - The new EMC Lifeline interface makes it even easier to use and adjust the different features and applications.

Greater Performance - Utilizes a dual core processor to handle all your tasks and applications. 3x the read performance over the last generation means superfast speeds. Can easily stream multiple HD movies at the same time.

Energy Saving - Consumes less than 9 Watts of power during operation. Cool, quiet, fan-less design. Uses less than 3 Watts of power when idle.

UPnP and DLNA Certified AV Media Server - Able to stream photos, audio content and videos to a variety of media devices like game consoles (XBOX 360, PlayStation 3), audio bridges, iTunes players, picture frames, networked TVs, etc.

Torrent Enabled - Easier and faster downloads of large media files without the need of a PC.

Form Factor

Dimensions 10.3" x 7.3" x 5.9" 8.38" x 4.92" x 1.58"
Weight 5.8 lbs. lbs 2.45 lbs. lbs
Form Factor 3.5" Desktop


Data Link Protocol Ethernet
Network Interface Controller
DLNA Certified No Yes


Standards IEEE 802.3, IEEE 802.3u, IEEE 802.3ab IEEE 802.3, IEEE 802.3u
Supported Protocols File Server: SMB, AFP, FTP, HTTP, HTTPS
Others: Apple Bonjour, BitTorrent, NTP, DHCP, Apipa
CIFS/SMB/Rally (Microsoft), AFP/Bonjour (Apple), FTP, HTTP, HTTPS
Processor Intel Atom D510 1.66GHz (Dual Core) Dual core CPU at 600Mhz
Memory RAM: 1GB DDR II
Flash: 512MB
RAID RAID 0, 1 RAID 0, 1, 5 and 10
LEDs Status, LAN, USB, eSATA, HDD Power/ status LEDs OLED display
Power AC Input 100-240V, 50-60Hz, Energy Star V Rated AC Voltage 100-240 VAC
Power: 9 Watts (max), 3 Watts (min)
Temperature 0°C - 40 °C 0°C - 40 °C
Humidity 0-95% RH (non-condensing) 20-80% Humidity (non-condensing)


Operating System Latest version of Windows XP, Windows Vista, Windows Vista 64-bit, Windows 7 / Mac OS X 10.4, 10.5, 10.6 / Linux 2.6 Supported Client Operating System:
- Microsoft Windows XP or newer
- Mac OS X 10.4 or newer
- Linux: Redhat 9, Enterprise 4/5, Gentoo, Mandrake 10, Devian 4, FedoraCore 6/5, OpenSUSE 10.3
Management Internet Explorer v6 or other Java-enabled Browsers
5 Different Hard Drive Configurations
E-mail Alerts
Drive Quotas
Power Management
DDNS: [yourname].lgnas.com
Active Directory: Supported
Media Streaming Server: DLNA
Download Server: BitTorrent
PC-NAS Sync: Supported
Music Server: iTunes
Smartphone: Data Copy, Stream Supported
USB Camera: Supported

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