QNAP TS-421 12TB vs QNAP TS-421 8TB

Comparison of TS-421 12TB, TS-421 8TB

65 specifications	A QNAP TS-421 12TBView product	B QNAP TS-421 8TBView product
Storage2 differ
Total installed storage capacityDiffers	12 TB	8 TB
Number of storage drives installed	4	4
Number of storage drives supported	4	4
Storage drive capacityDiffers	3 TB	2 TB
Storage drive interface	Serial ATA II	Serial ATA II
Storage drive size	2.5/3.5"	2.5/3.5"
HDD speed	Variable	Variable
Maximum supported storage capacity	16 TB	16 TB
RAID support	Yes	Yes
RAID levelsKnown for one	0, 1, 5, 6, 10, JBOD	—Unknown — not stated by the source
Hot-swap drive bays	Yes	Yes
Supported file systems	ext3, ext4, FAT32, HFS+, NTFS	ext3, ext4, FAT32, HFS+, NTFS
Drive device, buffer size	64 MB	64 MB
Processoridentical
Processor family	Marvell	Marvell
Processor frequency	2 GHz	2 GHz
Number of processors installed	1	1
Memoryidentical
Internal memory	1 GB	1 GB
Internal memory type	DDR3	DDR3
Flash memory	16 MB	16 MB
Networkidentical
Ethernet LAN	Yes	Yes
Ethernet LAN data rates	10,100,1000 Mbit/s	10,100,1000 Mbit/s
Wi-Fi	No	No
DHCP client	Yes	Yes
DHCP server	Yes	Yes
Jumbo frames support	Yes	Yes
iSCSI support	Yes	Yes
Wake-on-LAN ready	Yes	Yes
Cabling technology	10/100/1000Base-T(X)	10/100/1000Base-T(X)
Supported network protocols	CIFS/SMB, AFP (v3.3), NFS (v3), FTP, FTPS, SFTP, TFTP, HTTP(S), Telnet, SSH, iSCSI, SNMP, SMTP, SMSC	CIFS/SMB, AFP (v3.3), NFS (v3), FTP, FTPS, SFTP, TFTP, HTTP(S), Telnet, SSH, iSCSI, SNMP, SMTP, SMSC
Ports & interfacesidentical
Ethernet LAN (RJ-45) ports	2	2
USB 2.0 ports quantity	2	2
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity	2	2
Fiber ports quantity	0	0
eSATA ports quantity	2	2
eSATA	Yes	Yes
Designidentical
Chassis type	Tower	Tower
Product colour	Black	Black
Number of fans	1 fan(s)	1 fan(s)
LED indicators	eSATA, HDD, LAN, Status, USB	eSATA, HDD, LAN, Status, USB
Display type	LCD	LCD
Performanceidentical
Buzzer	Yes	Yes
Multilingual support	Yes	Yes
Number of users	4096 user(s)	4096 user(s)
Web-based management	Yes	Yes
Access Control List (ACL)	Yes	Yes
On/off switch	Yes	Yes
Reset button	Yes	Yes
Security algorithmsKnown for one	HTTPS, SSH, SSL/TLS	—Unknown — not stated by the source
Softwareidentical
Operating system installed	QNAP Turbo System	QNAP Turbo System
Operating system version	4.0	4.0
Windows operating systems supported	Yes	Yes
Linux operating systems supported	Yes	Yes
Mac operating systems supported	Yes	Yes
Poweridentical
Power supply unit (PSU) capacity	120 W	120 W
Number of power supply units	1	1
Power consumption (sleep)	13 W	13 W
AC input voltage	100-240 V	100-240 V
Weight & dimensionsidentical
Width	180 mm	180 mm
Depth	235 mm	235 mm
Height	177 mm	177 mm
Weight	3 kg	3 kg
Packaging contentidentical
External power adapter	Yes	Yes
Cables included	AC, LAN (RJ-45)	AC, LAN (RJ-45)
Operational conditionsidentical
Operating temperature (T-T)	0 - 40 °C	0 - 40 °C
Operating relative humidity (H-H)	0 - 95%	0 - 95%

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.