QNAP TS-253 Pro User Manual

41
Chapter 4. LED and Alarm Buzzer Specifications
The LED indicators of the NAS indicate the system status and information. When the NAS is
turned on, check the following items to make sure the system status is normal. Note that
the following LED information is applicable only when users have properly installed the hard
drive, and connected the NAS to the network and the power supply.
LED Color LED Status Description
System
Status
Red/
Green
Flashes green
and red
alternately
every 0.5 sec
1. The hard drive on the NAS is being
formatted.
2. The NAS is being initialized.
3. The system firmware is being updated.
4. RAID rebuilding is in process.
5. Online RAID Capacity Expansion is in
process.
6. Online RAID Level Migration is in process.
Red
1. The hard drive is invalid.
2. The disk volume has reached its full
capacity.
3. The disk volume is going to be full.
4. The system fan is out of function.
5. An error occurs when accessing
(read/write) the disk data.
6. A bad sector is detected on the hard
drive.
7. The NAS is in degraded read-only mode
(2 member drives fail in a RAID 5 or RAID
6 configuration, the disk data can still be
read).
8. Hardware self-test error.
Flashes red
every 0.5 sec
The NAS is in degraded mode (one member
drive fails in RAID 1, RAID 5 or RAID 6
configuration).
Flashes green
every 0.5 sec
1. The NAS is starting up.
2. The NAS is not configured.
3. A hard disk drive is not formatted.
Flashes green
every 2
seconds
The NAS is in S3 sleep mode
1
.
Green The NAS is ready.
Off
All the hard disk drives on the NAS are in
standby mode.
1
This feature is only available on certain NAS models. Please refer to the product specification table
for details at www.qnap.com.

QNAP TS-253 Pro Specifications

General

RAID levels	0, 1, JBOD
RAID support	Yes
Storage drive size	2.5/3.5 \
Storage drive capacity	- GB
Supported file systems	ext3, ext4, FAT32, HFS+, NTFS
Storage drive interface	Serial ATA II, Serial ATA III
Storage drives installed	No
Installed storage drive type	-
Supported storage drive types	HDD & SSD
Total installed storage capacity	0 TB
Maximum supported storage capacity	- TB
Number of storage drives installed	0
Number of storage drives supported	2
Processor cores	4
Processor family	Intel® Celeron®
Processor frequency	2 GHz
Flash memory	512 MB
Internal memory	8 GB
Internal memory type	DDR3L
Ethernet LAN data rates	10, 100, 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
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.
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity	3
Chassis type	Tower
Cooling type	Active
Fan diameter	70 mm
Product color	Black
Number of fans	1 fan(s)
Cable lock slot type	Kensington
Type	NAS
Device class	Home & Home Office
Backup features	Cloud, iSCSI LUN
Security algorithms	256-bit AES, FIPS 140-2, HTTPS, SSH, SSL/TLS
Operating system version	4.1
Operating system installed	QNAP Turbo System
Fan voltage	12 V
AC input voltage	100-240 V
AC input frequency	50 - 60 Hz
Power consumption (sleep)	0.74 W
Power consumption (typical)	16.34 W
Power supply unit (PSU) capacity	90 W
Cables included	LAN (RJ-45)
Operating temperature (T-T)	0 - 40 °C
Operating relative humidity (H-H)	5 - 95 %

Weight and Dimensions

Depth	216 mm
Width	102 mm
Height	150 mm
Weight	1740 g
Package weight	2920 g