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General

Manufacturer Drobo Buffalo Technology
Model DRDR4A21 HD-QL4TU3R5
Lowest Price $609.99 Compare Drobo DRDR4A21 prices $621.99 Compare Buffalo Technology HD-QL4TU3R5 prices
Warranty 2 years limited 2 years limited

Ports

RJ45 Ports 1 x 10/100/1000M 2 x 10/100/1000M
USB Ports 1 x USB 2.0 (type A) 1 x USB3.0
eSATA Ports Yes No
Other Ports 1 VGA (recovery only) 1 x PCIe

Storage

Drive Bays 2 4
Hard Disk Interface 2 x SATA 4 x SATA
Hard Disk Size 4TB 4 x 1TB
Rotational Speed 7200RPM 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
SuperSpeed USB 3.0: Provides accelerated ¬file access and interface speeds, up to 5 Gbps

Four Easily Accessible Hard Drives: Includes two hard drives for easy maintenance with the choice of optimal capacity, performance or redundancy

Connect & Go: Preformatted hard drive is ready to use out of the box - no formatting or driver installation required

Works with PC (NTFS and HFS+ support) and Mac: Connect to your computer for additional storage or backup of your music, photo, video and data files

Buff¬alo Tools: Use Buff alo Tools to enhance PC and transfer performance and to back up your important digital assets

TurboPC Utility: Enhance the overall performance of your PC and increase file transfer rates

NovaBACKUP Business Essentials: Includes an easy to use, complete backup solution for your Windows and Windows Server PC - also includes a backup agent for MS SQL and Exchange

Time Machine Compatibility: Works perfectly with Time Machine to back up your Mac computer

Form Factor

Dimensions 10.3" x 7.3" x 5.9" 9.2" x 6.1" x 5.9"
Weight 5.8 lbs. lbs 12.5 lbs. lbs
Form Factor 3.5" Desktop

Networking

Data Link Protocol
Network Interface Controller
DLNA Certified No No

Hardware

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
Transport Protocols: TCP/IP, Appletalk
File Protocols: SMB/CIFS, HTTP/HTTPS, FTP, NFS v3, AFP
Processor Intel Atom D510 1.66GHz (Dual Core) Intel Atom D525 (1.8GHz, dual-core)
Memory RAM: 1GB DDR II
Flash: 512MB
1GB DDR-3 SDRAM
RAID RAID 0, 1 RAID 0, 1, 5 and 10
LEDs Status, LAN, USB, eSATA, HDD HDD Power, Activity (Yellow) / Fail (Red)
LAN_WAN Activity (Green) /
USB_COPY_Busy (Blue)
USB_COPY_ Fail (Red)
Power AC Input 100-240V, 50-60Hz, Energy Star V Rated 100-240 VAC 50/60Hz
Temperature 0°C - 40 °C 5°C - 40 °C
Humidity 0-95% RH (non-condensing) 0-80% RH 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 2008 (32-bit/64-bit), Windows Server 2008 R2 (64-bit), Windows Server 2003 (32-bit), Windows Server 2003 R2 (32-bit), 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
Volume Management:
Share folder level Access Control List (ACL) support; Volume level encryption; Quotas setting; Share management

Disk Management:
Multi-volume management; SMART status monitor

Backup Management:
Local backup (USB device to NAS, NAS to USB device); NAS to NAS backup; Client system backup, Bare Metal Restore over network

Event Management:
Event email notification

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