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General

Manufacturer Drobo NETGEAR
Model DRDR4A21 RNDP400U-100NAS
Lowest Price $609.99 Compare Drobo DRDR4A21 prices $589.99 Compare NETGEAR RNDP400U-100NAS prices
Warranty 2 years limited 3 years limited

Ports

RJ45 Ports 1 x 10/100/1000M 2 x 10/100/1000M
USB Ports 1 x USB 2.0 (type A) 3 x USB2.0
eSATA Ports Yes No
Other Ports 1 VGA (recovery only)

Storage

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

Features

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.

Power:
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
DLNA and TiVo compatible
Stream videos to mobile devices
Drag-and-drop remote access
X-RAID2 auto expansion technology

For the Hard drives compatibility, please go to http://www.readynas.com/?page_id=82

Warning:
The firmware that is needed for Netgear NAS products to be compatible with 3TB drives (assuming it did not come with a 3TB drive) is RAIDiator 4.2.17. For more details, please go to this link below to download this software.
http://www.readynas.com/index.php?s=3TB+support

Please visit the following link to get the latest software for your ReadyNAS product.
http://www.readynas.com/?p=5568

Form Factor

Dimensions 10.3" x 7.3" x 5.9" 5.28" x 8.07" x 8.78"
Weight 5.8 lbs. lbs 5.1 lbs. lbs
Form Factor 3.5" 4-Bay

Networking

Data Link Protocol
Network Interface Controller
DLNA Certified No Yes

Hardware

Standards IEEE 802.3, IEEE 802.3u, IEEE 802.3ab IEEE 802.3, IEEE 802.3u, IEEE 802.3ab
Supported Protocols File Server: SMB, AFP, FTP, HTTP, HTTPS
Others: Apple Bonjour, BitTorrent, NTP, DHCP, Apipa
Networking: TCP/IP

File Sharing: CIFS/SMB, AFP, HTTP/HTTPS, FTP/SFTP

Management: HTTP/HTTPS

Time Synchronization: NTP
Processor Intel Atom D510 1.66GHz (Dual Core) Intel Atom dual-core Processor
Memory RAM: 1GB DDR II
Flash: 512MB
1GB DDR2 SODIMM
RAID RAID 0, 1 RAID 0, 1, 5
LEDs Status, LAN, USB, eSATA, HDD
Power AC Input 100-240V, 50-60Hz, Energy Star V Rated Internal 120W
Temperature 0°C - 40 °C 0°C - 40 °C
Humidity 0-95% RH (non-condensing) 20-80% Humidity (non-condensing)

Software

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 Client OS Support:
Windows 7 (32-bit/64-bit), Windows Vista (32-bit/64-bit), Windows XP, Windows 2000, Windows Server 2003, Windows Server 2003 R2, Windows Server 2008, Windows Server 2008 R2, Mac OS X 10.4 or later
Management Internet Explorer v6 or other Java-enabled Browsers
5 Different Hard Drive Configurations
Scandisk
E-mail Alerts
Drive Quotas
Power Management
HTTP/HTTPS

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