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Thecus N5550 5BAY SATA RAID 0/1/5/6/10/JBOD Tower Network Storage Server NAS HDMI USB3.0

Thecus N5550 5BAY SATA RAID 0/1/5/6/10/JBOD Tower Network Storage Server NAS HDMI USB3.0 - 1
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Thecus N5550 5BAY SATA RAID 0/1/5/6/10/JBOD Tower Network Storage Server NAS HDMI USB3.0 - 74067_l.jpg Thecus N5550 5BAY SATA RAID 0/1/5/6/10/JBOD Tower Network Storage Server NAS HDMI USB3.0 - 74067_1.jpg Customer Photos (0)
Thecus Tech
Reg. Price: $599.99  CAD
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   Shipping Weight:   20 lbs
   Part #: N5550
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Features    [ Edit | History ]

Thecus® is proud to present itself as a technological innovator. Once again, Thecus® releases an all new 5-bay N5550 server to lead the competition. The past proves merit: link aggregation, LCM display, USB 3.0, multi RAID functions and so on. Impressive technologies have been used to develop the new N5550 NAS to serve one single purpose: improve user experience and satisfaction.

Quick Specs:
Standard Memory 2 GB
Form Factor Tower
Processor Type Atom
RAID Levels 0 1 5 6 JBOD
Memory Technology DDR3 SDRAM
Height 9.1"
Width 7.5"
Depth 9.4"
Processor Manufacturer Intel
RAID Supported Yes
Number of Total Expansion Bays 5
Network (RJ-45) Yes
Total Number of USB Ports 5
Number of USB 2.0 Ports 4
Number of USB 3.0 Ports 1
Clustering Supported Yes

Specifications    [ Edit | History ]
     RAID Levels: 0
     RAID Supported: Yes
General Information  
     Brand Name: Thecus
     Manufacturer: Thecus USA, Inc
     Manufacturer Part Number: N5550
     Manufacturer Website Address:
     Product Model: N5550
     Product Name: N5550 Network Storage Server
     Product Type: Network Storage Server
I/O Expansions  
     Number of Total Expansion Bays: 5
     Audio Line In: Yes
     Audio Line Out: Yes
     eSATA: Yes
     HDMI: Yes
     Network (RJ-45): Yes
     Number of USB 2.0 Ports: 4
     Number of USB 3.0 Ports: 1
     Total Number of USB Ports: 5
     VGA: Yes
Management & Protocols  

Power Management: Scheduled Power On/Off

Volume Management:

  • Multiple RAID
  • Multiple File System Selectable (EXT3/EXT4/XFS)

     Protocols: IP
     Memory Technology: DDR3 SDRAM
     Standard Memory: 2 GB
Physical Characteristics  
     Depth: 9.4" (240 mm)
     Form Factor: Tower
     Height: 9.1" (230 mm)
     Width: 7.5" (190 mm)
Processor & Chipset  
     Processor Manufacturer: Intel
     Processor Type: Atom
     Clustering Supported: Yes

Thecus Tech N5550 Customer Reviews

Product reviews on are screened for relevance and inappropriate content. Reviews may contain inaccurate information about the product. If there is a discrepancy, please use the Flag this Review link located beside each review. Reviews are not an endorsement expressed by, but opinions from customers based on their own experience with a product. We do not recommend you make purchasing decisions based on facts or opinions expressed regarding Thecus Tech N5550 reviews.
Experience: 2 Weeks
 Verified Owner
- cheapest NAS in the market, and 5 bays! Got it when it was on sale!
- fast file transferring speed
- reliable, very stable.
- easy to setup up Raid, just follow the steps. Two 4TB Raid 1 setup. Took less than 5 minutes.
- Easy to install hard drives, I use WD Red.
- 2G Memory
- PLEX! easy to setup up too.
- upgraded to the latest firmware without a problem.
- Mobile access to NAS, Mobile access to my Plex server is also pretty easy
- Able to sync photos from my phone to NAS
- My NAS is in next to my router in the living room, I can hear the fan humming, not loud though.
- USB 3 at the front and covered. I dont use USB 3 anyway.
- I didn't get to choose how I wanted to format my drives, not sure if i missed a step.
- UI could be better
- the look is not appealing as Qnap's, almost got the Qnap TS451 but can't justify its price.
A solid device! I was very surprised how fast I got my NAS setup and running. The manual might a bit confusing but basically after hard drives are installed, connect ethernet cable from router to WAN, on your home computer, you should see a new device, put in the installation CD and just follow the steps after. I run my NAS 7/24 and so far so good.

Experience: 2 Years
 Verified Owner
- Cheapest 5-bay NAS on the market!
- Reliable, Quiet, & Low Power
- High Performance
- Supports all major protocols (CIFS, NFS, iSCSI, etc)
- Link Aggregation
- Vendor Support
- GUI / Web Interface "ThecusOS" is alright. Easy to use but could be more modern.
- Sketchy Firmware Upgrades / Process - Have a backup of ALL data!
I started off with one and have been so impressed by them that I just continued to buy them. The Thecus N5550 is in my opinion the most cost effective 5-bay NAS devices on the market today. No other 5-bay NAS comes close to this price point. They are extremely reliable, have great performance, and use very little power. I would have preferred to go the Synology route, but I just couldn’t justify their premium price point.

I have 3 x N5550 and I have no issues with them at all. Two for data, media in RAID 5. Another that runs SSD RAID to run 10+ VMware virtual machines with zero issues. Highly recommended.

Experience: 4 Months
 Verified Owner
very fast, responsive, lotsa theccus apps to load on the nas for more use's and productivity depending what your into
not theccus' fault but hdds are expensive lol
- linux onscreen display when you plug the thing to a monitor could a little more responsive.
- been using since sept 2014
- lot's of theccus apps to load on the nas for more use's and productivity depending what your into
- filled it with initially 2x 4TB wd red drives, was running out of space so I bought a third, and migrated to raid 5.
- UI seems easy to use.
- plex server runs great.
- auto power on/off setting works nicely
- catch it on sale though!

Experience: 20 Days
 Verified Owner
Inexpensive, Quiet, Cool.

It's a 5 bay NAS with an Atom CPU, and 2GB of RAM for 400 bucks.
Involved interface, drive bay door is cheap plastic.
I got this to replace a NAS I had bought on the cheap a few years ago that was showing signs of finally dying. So, in comparison, this beast is much more machine than I was used to. Drive installation was straightforward, and setup was relatively easy if you go online to the Thecus website and go from the manual there.

There are a lot of feature to get used to, but it runs cool and quiet, and for the price NCIX is selling it for, this thing is a steal.

Kevin J._C
Experience: 7 Days
 Verified Owner
Fast, easy to setup. $150 discount was awesome.
A little limited in terms of expandability in terms of modules. This is supposed to be addressed by the new OS6 soon to come out. Had to do a hard poweroff and it took 2 days to rebuild the volumes - 5 x 3 TB drives. Probably on par with other systems tho.
Really enjoying this machine. Looking forward to years of service from it.

Experience: 4 Weeks
 Verified Owner
Build quality, speed, price/value/performace ratio especially when it's at a discounted price below $450
Documentation could be better but not a big deal if you have some knowledge of networking e.g. WAN/LAN, link aggregation, iSCSI, etc.
The have zero problem so far with the N5550. It's been running 24/7 since it was purchased during the boxing week with 4 Seagate Constellation in a RAID 5 array. Read / write throughput have been excellent between 80-110 MB/s. This is super fast compared to my 4 year old but reliable ReadyNAS NV+ ~ 20-25 MB/s. The ReadyNAS is now a backup for the N5550. Overall I am very happy with my purchase from a price / performance perspective. Make sure you upgrade the firmware to the later .08 version right away as mine came with the old .03 release, which might have stability issues when transferring a large amount data.

Experience: 4 Months
 Verified Owner
Fast & reliable
Interface can be tricky
This is a great NAS. It is very quick and I have not encountered any slowdowns or performance degredation. Consistantly able to max out 1GB LAN connection. Feature set for modules could be improved through better interfaces.

Experience: 14 Days
 Verified Owner
Inexpensive, Fast transfer rates between PC, lots of BIOS features, E-Sata, looks cool and runs quite.
it's a little complicated for the average user. Shared folders that can't be deleted, moving or copying data between folders on the same NAS is quite slow?
I bought 2 of these NAS devices and so far been very happy with them. I am running 5 3TB western digital RED drives in one and 4 3 TB western digital Red in the other. I have everything running RAID 5 an So far...No issues at all.

Experience: 1 Weeks
Easy to use
Fast transfer speeds
Tons of features
Good price
Front door is flimsy, but don't expect to open very often
Have had no problems with this NAS box. Was simple to set up with 4 3TB WD Red hard drives in RAID 10. Excellent transfer speed via the eSATA or USB 3. Had it up and running on my home network in a about 15min. For the price I think it is excellent.

Experience: 50 Days
 Verified Owner
5 Drive Bays.
Good extra features.
Slow support.
Got this and put in 5 HDs off of their HCL. I would NEVER buy this again. Totally unreliable, from misreported drive failures to it's inability to bulk copy/move data without crashing.
Until they have resolved the firmware issues with this box, I'd stay far, far away from it.

Shortly after writing this, Thecus released a firmware update. The box has been rock solid after this update. I am ONLY using it as a NAS though... no other modules active.

This review was modfied by poster @ 02-26-14 08:44 AM

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Messages about Thecus N5550 5BAY SATA RAID 0/1/5/6/10/JBOD Tower Network Storage Server NAS HDMI USB3.0

NAS - Mixing Hard Drives (Samantha_L- Apr 28, 15, 2 Replies) Read this message
Pre-Purchase questions... Thecus N5550 (Racefan20- Nov 29, 13, 0 Replies) Read this message
Anyone used one of these? (rdurand- Jan 08, 13, 1 Replies) Read this message

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Forum messages are not reviewed and may not contain accurate information about a product. Message contents are opinions from customers based on their own experience with a product. We do not recommend you make puchasing decisions based on Forum messages.
Reviews from the Web

Below are reviews found on other web sites for this product submitted by customers.

Comment: Now that we've established the Thecus N5550 as the best value on the market today let's take it a step further.
Posted by: Randy_J @12/27/12
Posted by: BradTN @09/25/12
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