QNAP TS-421U

4Bay-Rackmount

Business-ready with productive applications

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The TS-421U is a cost-effective networked storage center incorporating high reliability and scalability. Featuring cross-platform file sharing, comprehensive backup solutions, iSCSI and virtualization applications, and many other practical business applications, the TS-421U is the ideal choice for SMBs to store and secure the growing business data as a reliable private cloud.

Manage and share files in one centralized storage.
Back up business data with encrypted remote replication, Real-time Remote Replication (RTRR), and cloud-based storage backup.
Utilize NAS, iSCSI/ IP-SAN storage combo solution for server virtualization
Facilitate iSCSI and virtualization deployment.
Increase efficiency with the support of Windows AD/LDAP, Windows ACL, and more.
Synchronize files between computers, tablets, and mobile devices.

CPU	Marvell 2.0 GHz
Memory	1GB DDR3 RAM
Flash Memory	16MB
Hard Drive	4 x 3.5" or 2.5" SATA I/II hard disk drive (HDD) NOTE: The system is shipped without hard disk drives. For the hard disk drive compatibility list, please visit http://www.qnap.com/compatibility
Hard Drive Tray	4 x hot-swappable and lockable tray
LAN Port	2 x Gigabit RJ-45 Ethernet port
LED Indicators	USB, Status, HDD 1, HDD 2, HDD 3, HDD 4, LAN
USB	2 x USB 3.0 port, 2 x USB 2.0 port Supports USB printer, disk, pen drive, USB hub, and USB UPS, etc.
eSATA	2 x eSATA port (Back)
Buttons	System: Power button, USB one-touch-backup button, reset button
Alarm Buzzer	System warning
Form Factor	Rackmount
Dimensions	44(H) x 439(W) x 483(D) mm 1.73(H) x 16.97(W) x 19.02(D) inch
Weight	Net weight: 6.7 Kg (14.77 lb) Gross weight: 9.5 Kg (20.94 lb)
Power Consumption (W)	Sleep mode: 12W In operation: 33W (with 4 x 500GB HDD installed)
Temperature	0-40˚C/ 32-104°F
Relative Humidity	5~95% RH non-condensing, wet bulb: 27˚C.
Power Supply	Input: 100-240V AC, 50/60Hz, Output: 250W
Fan	2 x quiet cooling fan (4 cm, 12V DC)