QNAP TS-451 User Manual

30
Beep alarm (for all NAS models)
The beep alarm can be disabled in “System Administration” > “Hardware Settings”.
Beep sound
Number of Times
Description
Short beep (0.5 sec)
1
1. The NAS is starting up.
2. The NAS is being shut down
(software shutdown).
3. The user presses the reset button to
reset the NAS.
4. The system firmware has been
updated.
Short beep (0.5 sec)
3
The user tries to copy the NAS data to the
external storage device from the front
USB port, but the data cannot be copied.
Long beep (1.5 sec)
3, every 5 min
The system fan is out of function.
Long beep (1.5 sec)
2
1. The disk volume is going to be full.
2. The disk volume has reached its full
capacity.
3. The hard drives on the NAS are in
degraded mode.
4. The user starts the hard drive
rebuilding process.
5. A hard drive is plugged in or out.
1
1. The NAS is turned off by force
shutdown (hardware shutdown).
2. The NAS has been turned on
successfully and is ready.

QNAP TS-451 Specifications

General

RAID levels	1, 5, 6, 10, JBOD
Storage drive size	2.5/3.5 \
Storage drive capacity	3000 GB
Supported file systems	ext3, ext4, FAT32, HFS+, NTFS
Storage drive interface	Serial ATA III
Storage drives installed	Yes
Installed storage drive type	HDD
Supported storage drive types	HDD & SSD
Total installed storage capacity	12 TB
Maximum supported storage capacity	- TB
Number of storage drives installed	4
Processor cores	2
Processor model	-
Processor family	Intel® Celeron®
Processor frequency	2.41 GHz
Flash memory	512 MB
Internal memory	1 GB
Internal memory type	DDR3L
Maximum RAM supported	8 GB
Wi-Fi	No
Ethernet LAN data rates	1000 Mbit/s
Supported network protocols	CIFS/SMB, AFP(v3.3), NFS(v3), FTP, FTPS, SFTP, TFTP, HTTP(S), Telnet, SSH, iSCSI, SNMP, SMTP, SMSC
Fiber ports quantity	0
USB 2.0 ports quantity	USB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
Chassis type	Tower
Cooling type	Active
Fan diameter	120 mm
Product color	White
LED indicators	HDD, LAN, Status, USB
Number of fans	1 fan(s)
Cable lock slot type	Kensington
Type	NAS
Device class	Home & Home Office
Backup features	Cloud, iSCSI LUN
Number of users	4096 user(s)
Security algorithms	256-bit AES, FIPS 140-2, HTTPS, SSH
Operating system version	4.1
Operating system installed	QNAP Turbo System
AC input voltage	100-240 V
Power supply location	External
Power supply unit (PSU) capacity	90 W
Cables included	AC, LAN (RJ-45)
Operating temperature (T-T)	0 - 40 °C
Operating relative humidity (H-H)	5 - 95 %

Weight and Dimensions

Depth	235 mm
Width	180 mm
Height	177 mm
Weight	3000 g
Package weight	4300 g