|Series||NAS QNAP BOITIER D'EXPANSION 2 BAIES /RAID/1XUSB3.1 *TR-002* 5310/A|
|Item Model Number||O TR-002 USB 3.0 RAID|
|Product Dimensions||17 x 22 x 20 cm; 1.4 Kilograms|
|Item Dimensions L x W x H||17 x 22 x 20 centimetres|
|Item Weight||1.4 kg|
|Is Discontinued By Manufacturer||No|
|Date First Available||12 June 2019|
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QNAP TR-002 2 Bay Desktop NAS Expansion - Optional Use as a Direct-Attached Storage Device
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|Item dimensions L x W x H||17 x 22 x 20 centimetres|
|Compatible devices||Laptops, Desktops|
|Item weight||1.4 Kilograms|
About this item
- Usb 3.1 Gen. 2 Type-C port for faster data transfer
- Supports up to two SATA drives
- Disk mode dip switch to change from hardware control and software control configurations for setting RAID group
- Lockable Hard Drive trays to prevent accidental Drive removal
- Instantly back up files from the tr-002 to the NAS using the one touch copy Button**
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The tr-002 USB 3.1 Gen. 2 RAID Expansion enclosure allows you to expand the capacity of your QNAP NAS and PC. The tr-002 can also be utilized as a DAS (direct-attached storage) device, allowing you to directly access its content just by connecting it via USB. The tr-002 features two 3.5-Inch SATA drive bays with USB 3.1 Gen. 2 Type-C Connectivity to bring you a highly-reliable and secure storage capacity expansion solution.
effective storage expansion with RAID support
the tr-002 is an ideal storage expansion solution for PCs, especially for laptops which lack the ability to install higher-capacity drives. Featuring two 3.5-Inch SATA drive bays and supporting RAID configuration, The tr-002 provides the ability to store a vast number of files and data and to ensure protection against potential drive failure.
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als externe USB Platte am NAS, oder als NAS Erweiterung. Mit ein paar Einschränkungen kann das Gehäuse auch zwischen den Rollen wechseln.
Die Installation ist in beiden Fällen einfach: Platten einbauen, RAID Setup wählen (per DIP Switch, oder per Software), USB Kabel anschliessen und ggf. Platten neu formatieren.
Das TR-004 Chassis kommt mit einem USB 3.0 Typ C Anschluß, bei 5 Gbit/s ist also Ende. Da das NAS Chassis mit maximal 2Gbit/s am LAN hängt, ist das keine relevante Einschränkung.
Im Betrieb als NAS Erweiterung werden alle Platten im TR-004 Chassis zu einer RAID- Gruppe und einem Volume zusammengefaßt, wobei mit JBOD, RAID5 und RAID1/0 alle im Homeoffice üblichen Varianten erlaubt sind. Nachträgliche Erweiterungen an RAID- Gruppen sind nicht so flexibel möglich wie im NAS Chassis, vorausschauende Planung spart viel Arbeit.
Nicht erlaubt sind RAID- Gruppen, die über mehrere Chassis gehen. Die QNAP Performance Tests werden nur für Platten im NAS Chassis angeboten, nicht für die Platten im TR-004. Die Überwachung der Platten im laufenden Betriebs (Temperatur, SMART- Info) unterliegt keinen Einschränkungen.
Für den Betrieb direkt am MAC (oder PC) bietet QNAP eine Applikation zur Konfiguration des RAID Setups mit allen Varianten, selbst der Zugriff auf die einzelnen Platten (ohne RAID Funktionen) ist möglich. Ggf. müssen die Platten oder RAID- Gruppen für den Betrieb am MAC oder PC neu formatiert werden, ein Wechsel setzt voraus, das NAS und PC das gleiche Filesystem verwenden. Das NAS Chassis kommt mit NTFS und HFS+ zurecht, aber der MAC hat Probleme mit EXT3/4. Also ist auch hier ein wenig Planung hilfreich.
Bei allen kleinen Einschränkungen ist dies eine großartige Erweiterung zum akzeptablen Preis.
however this is a real disappointment.
I've tried it in RAID 5 and then RAID 10 with all 4 bays populated, in RAID 5 write speeds fluctuated between 9 MB/s and 55 MB/s, read speeds were a little better ranging from 9 MB/s to 65 MB/s.
RAID 10 is just a disaster with speeds ranging from 0 MB/s to 10 MB/s for both read and write.
Unless I can find a way to get better speeds from it its pretty useless to me and will be going back to Amazon shortly.
I've upped this to 3 stars because I'm now getting acceptable read speeds in RAID5 of 110-120 MB/s which is good enough for my needs.
Write speeds are still very poor at 10-45 MB/s but okish for me as I just set stuff to write to it and forget about it for 24 hours.
Qnap's instructions tell you to set the dip switches to software mode if using it as a NAS expansion and use your NAS to set it up and control the RAID mode, this is what my initial review was based on which results in an almost useless unit,
however setting the switches to hardware RAID 5 results in a much less flexible box but one which can be used and actually works within certain limits.
Build quality is just about okay. It's all plastic, and the drive trays are VERY plasticky, feeling far too cheap and brittle, and seemingly insufficient to be able to carry the weight of a 3.5 inch hard drive without breaking in half. But, when the drives are installed, they provide some stability themselves. The drives clip in to the carriers (the clips are frighteningly brittle plastic and seem likely to snap in half as the unit ages) and don't necessarily require screws if the device is being installed and left where it is. Nevertheless, screws are provided and recommended for additional stability if the drive is being transported.
But trying to get the TR-002 up and running was where the fun really started. It was painful, and I was initially so frustrated with its refusal to operate as it should that I had it all packed up and ready for return. But after having already purchased the two hard drives, I eventually relented and decided to persevere.
The first problem was just getting it connected to a Mac. After installing the drives and software utility, plugging the unit in, connecting it to the Mac and switching it on, all that happened was that the drives would spin up, the blue USB light would come on briefly to indicate an active USB connection, but then the light would go out straight away and the drives would spin down, and that was that. Deadly silence. The drives would simply not mount. Neither Disk Utility nor the QNAP External RAID Manager software could help. The user guide is brief and gives no troubleshooting information that is of any relevance under such circumstances.
After some considerable time, I eventually solved the connection issue by trial and error, although I'm still not sure precisely what made a difference. I tried different combinations of disconnecting the power, removing and reinstalling the drives, pressing the 'Set' button on the back of the unit, and swapping USB cables and ports on the Mac. After an hour of despair, a similar thing initially happened as before, i.e. the drives would spin up and then down again and the USB indicator would come on briefly and then go out, but this time the drives immediately began spinning up for a second time as the unit appeared to be trying desperately to leap back into life and connect to the Mac. After about 15 seconds of rumbling away, the drives appeared on the desktop and all appeared to be working. I have no idea precisely what eventually resolved this issue.
The default factory configuration (set via three tiny, old hat dip switches on the back panel) is set to 'Software Control' and the unit came with the RAID mode configured to 'Individual' (i.e. two independent drives). The 'Software Control' setting enables you to change the RAID mode using software rather than fiddling around with the dip switches themselves (these also allow you to set the RAID mode without using the software). RAID options for the TR-002 are RAID 0, RAID 1, JBOD and 'Individual', where the latter makes each drive available as two completely independent external drives.
I ran a soak test copying some heavy-duty files onto each drive with no problems.
But I then installed a fully bootable macOS onto one of the drives to test it as a boot volume. This was another disappointment, as the TR-002 does not support booting from a macOS volume, seemingly because it can't establish a stable USB connection until long after the Mac has booted. This is not the case with a G-Tech external USB enclosure which supports booting via USB without problems.
So I then decided to try the RAID 1 setting, one of the main reasons for choosing this device. But this, again, was no fun at all. Using the software to reconfigure the unit appeared to work initially, but when the unit restarted I was right back to the beginning, with the TR-002 completely failing to spin up and connect to the Mac. After another hour of wasted time trying to troubleshoot this same situation I eventually somehow managed to force a connection to the Mac once again. As expected, it then told me the drives required initialisation. So off to Disk Utility to format the drive(s)...
More problems. Initialising the drives failed repeatedly, with Disk Utility reporting an error message saying the drives were corrupted. So I was back to more troubleshooting, connecting, disconnecting, powering down, removing and swapping drives, restarting etc. etc. and again, the unit eventually restarted and requested once more that the drives be initialised. This time, initialisation was a success.
At long last, we were in RAID 1 mode, so again I ran a soak test copying some heavy-duty files and had no problems.
But then I tried to partition the logical drive so that it appeared as several smaller logical drives on the desktop. This was a repeated failure, with Disk Utility reporting a drive error every time. So I contacted QNAP who responded in a couple of days, only to confirm that: "you are not able to create multiple partitions with this expansion bay." Well that was another disappointment. Again, my trusty old 'G-SAFE' RAID 1 enclosure has no issues in this regard.
But then, after having tried unsuccessfully to partition the logical drive, it once again became totally unusable, with Disk Utility now unable to erase and reformat the drive as a single partition without reporting drive errors. So I appeared to be stuck yet again, and it was back to the troubleshooting. After jumping through all the hoops listed previously, I was eventually able to restart the TR-002 and successfully reformat the drives.
But then I made the mistake of seeing how effective changing the dip switch settings on the back of the unit might be, compared to using the software to configure the unit. Despite following the user guide precisely, making changes to the dip switches resulted in complete chaos once again, with the drive becoming inoperable as on previous occasions. So lots more powering down, disconnecting, changing ports, swapping drives, etc. was required once more, and after another hour or so of trial and error, I managed to get the system working, having eventually been able to use the dip switches to change from RAID 1 back to 'Individual' mode. What a palava this thing is.
I then attempted to partition the individual drives, assuming that, as it's no longer operating in a strict RAID mode, this shouldn't be a problem. But, you guessed it, more 'corrupted drive' messages from Disk Utility which failed miserably to partition even a single independent drive. After yet more time troubleshooting as before and an eventually successful restart, I was ultimately able to partition the individual drives without further ado.
After endless testing, I found this device to be insanely frustrating with regard to the initial set-up and any subsequent change of RAID mode, all of which took endless hours of troubleshooting to eventually get the thing to work properly in any selected mode. And all of which remains inexplicable, except to say that this device clearly does not like being switched from one mode to another, something that should be seamless but which instead creates total chaos.
However, as and when you eventually get the thing working, it appears to be stable and reasonably quiet, copying data as expected without issues, at least for now.
But other disappointments include no support for partitioning the logical drive when in RAID 1 mode.
And it does not support booting from a bootable macOS drive or partition, so it cannot be used as an emergency start-up drive.
None of the above instils great confidence with regard to long-term dependability or the safe keeping of valuable data. And it's not a substitute for a reliable data back-up option.
Having said that, I'd already bought the hard drives, so I have resigned myself for the time being to continuing to use the TR-002 to provide some additional studio redundancy as a dual (two individual drives) drive enclosure for day-to-day archiving, but am going back to G-Technology (now a Western Digital 'Sandisk' branded product) for their superior, proven, more fully-featured, and more easily installed and configured RAID systems.
Based on my experience, I would not recommend the QNAP TR-002 as a RAID enclosure. Although I was eventually able to get the device working, this was not without endless hours of trial and error. And the inexplicable refusal of the TR-002 to just do as it was told was immensely frustrating. With all that in mind, I'd say that this is quite simply the worst ever external DAS unit I have experienced in 30 years of using and configuring Mac systems and peripherals.
Would I buy another? Nope, sorry QNAP.
It's cheap and cheerful, and you get what you pay for. I'd rather pay more and have an easy life!