++
Better to have data on two separate machines running no RAID than on one machine running RAID if data backup is your goal. RAID was designed primarily for enterprise use to minimize downtime when a drive fails - and even then, any serious business will have an offsite backup. In home use, the time-cost for replacing the hard drive on a non-RAIDed machine and then copying data from your backup machine is well worth the data safety you get from having that backup machine.
That said, external AND internal hard drives are both *relatively* cheap, so should be not-too-hard to get the benefits of both RAID and backup in home use :)
We took a look at the performance of the QNAP TS-659 Pro II in the configuration that it is most likely to be used in. It turns out to be a better performer than the LaCie 5big storage server unit that we reviewed last year in the same class.
There are a few quirks in the firmware, particularly with respect to the RAID rebuild. However, none of them are showstoppers. There are a few features such as one touch copy for the USB 3.0 port which could have made more sense for an eSATA port. USB 3.0 is a nice add-on feature, but we are not sure it is worth any additional price premium in the SMB / SOHO NAS market.
QNAP's marketing claims also hold up very well (except for the power consumption numbers which are kept low in the brochures by using 500 GB hard disks, and the rating of the internal PSU, which is 250W instead of the 350W claimed in the marketing brochure). Just like Synology, QNAP also has an exensive wiki system and very helpful forums.
All in all, the Atom D525 based QNAP TS-659 Pro II is the most powerful NAS we have reviewed so far, in terms of raw NASPT benchmark results as well as add-on features (both in terms of hardware as well as firmware). The TS-659 Pro+ has the same hardware specs as the TS-659 Pro II reviewed here (except for the two USB 3.0 ports). If the end-user scenario doesn't involve USB 3.0 devices, the former would turn out to be as good a choice as the TS-659 Pro II.
68 Comments
RE: RAID doesn't replace a back up by geniekid on Monday, September 19, 2011
RE: RAID doesn't replace a back up by ganeshts on Monday, September 19, 2011
I agree with your points :) But, the mainboard / PSU failure doesn't mean that data is lost. Please check out my LG N2A2 review, where I recovered data from a 'fried' system using UFS Explorer.
I believe UFS Explorer can still be used here, but one needs to feed each disk into the rebuilding computer, make an image, and then recover after making UFS Explorer recognize all the images. I didn't check this out because I don't have a test system handy with ~6 TB worth of free space. Will try to redress in future :)
I believe UFS Explorer can still be used here, but one needs to feed each disk into the rebuilding computer, make an image, and then recover after making UFS Explorer recognize all the images. I didn't check this out because I don't have a test system handy with ~6 TB worth of free space. Will try to redress in future :)
RE: RAID doesn't replace a back up by mino on Monday, September 26, 2011
MoBo/PSU failure might easily take the disks with itself either by corrupting data or physicaly damaging them.
Not to mention no way ofe getting them back withou getting identical mobo even if data was not touched AND hoping the new firmware will not zero them on sight ...
Not to mention no way ofe getting them back withou getting identical mobo even if data was not touched AND hoping the new firmware will not zero them on sight ...
RE: RAID doesn't replace a back up by DeviousDog on Monday, September 19, 2011
True!!! But data storage and backup are two different things. As the article states RAID helps with media falure.
Just need to correct this
» unintentional deletion of a file - QNAP has a network recycle bin, so if you do delete a file it is not deleted. Only the soft link is deleted until you empty the recycle bin.
» virus - QNAP has an addon AntiVirus product, but then you should use Access Control Lists to protect data from virus and deletions.
» Power Black Out - Anyone that has a NAS, and does not have a UPS attached is a fool!!
» mainboard/PSU failure which fries the system - Use a UPS which has a clean line filter so the main board does not get a spike, even if it did fry the system. QNAP uses a software RAID so pull it out and put in another QNAP and re-apply the firmware and you are up and running again.
I agree though.. RAID is RAID it is not data protection (too a point) it is physical media protection for the RAID volume if a hard drive fails. That being said, there is nothing stopping you from making a 4 bay RAID 5 and then having a 1 or 2 bay RAID 0 on the same box for backup.
I have a TS-859 Pro + for personal use, I have a 5 Bay RAID 5 which is backed up onto the same QNAP which has 2 Bays holding 2 x 3TB drives in a RAID 0 for backup.
Just need to correct this
» unintentional deletion of a file - QNAP has a network recycle bin, so if you do delete a file it is not deleted. Only the soft link is deleted until you empty the recycle bin.
» virus - QNAP has an addon AntiVirus product, but then you should use Access Control Lists to protect data from virus and deletions.
» Power Black Out - Anyone that has a NAS, and does not have a UPS attached is a fool!!
» mainboard/PSU failure which fries the system - Use a UPS which has a clean line filter so the main board does not get a spike, even if it did fry the system. QNAP uses a software RAID so pull it out and put in another QNAP and re-apply the firmware and you are up and running again.
I agree though.. RAID is RAID it is not data protection (too a point) it is physical media protection for the RAID volume if a hard drive fails. That being said, there is nothing stopping you from making a 4 bay RAID 5 and then having a 1 or 2 bay RAID 0 on the same box for backup.
I have a TS-859 Pro + for personal use, I have a 5 Bay RAID 5 which is backed up onto the same QNAP which has 2 Bays holding 2 x 3TB drives in a RAID 0 for backup.
RE: RAID doesn't replace a back up by DeviousDog on Tuesday, September 20, 2011
Oh.. forgot to also state, I then backup my box to another rsync server located at my brothers house through a VPN. Additionally I backup data to a cloud service for highly important stuff (photos), all of which the QNAP OS supports.
RE: RAID doesn't replace a back up by Death666Angel on Tuesday, September 20, 2011
All your points are very valid, as well. :D
But the article made it sound as though just having the redundancy is all you need. That was my main beef, as such a statement might lead the uninformed to set up a RAID array, put all their beloved old childhood photos and videos on it and then be surprise when there is a power outage which messes up all their data.
Yes, you can protect against black out, electrical spikes, viruses, unintentional deletion etc. But by other means than a RAID.
That was my point. Not that RAID is inherently dangerous. But that such a broadly worded statement is false and can lead uninformed people into dangerous situations. A brief 2 - 3 sentence paragraph about this stuff would suffice to enlighten most people to the problem, I think. :D
But the article made it sound as though just having the redundancy is all you need. That was my main beef, as such a statement might lead the uninformed to set up a RAID array, put all their beloved old childhood photos and videos on it and then be surprise when there is a power outage which messes up all their data.
Yes, you can protect against black out, electrical spikes, viruses, unintentional deletion etc. But by other means than a RAID.
That was my point. Not that RAID is inherently dangerous. But that such a broadly worded statement is false and can lead uninformed people into dangerous situations. A brief 2 - 3 sentence paragraph about this stuff would suffice to enlighten most people to the problem, I think. :D
RE: RAID doesn't replace a back up by DeviousDog on Wednesday, September 21, 2011
RAID is good (except RAID 0), the article does state it protects against media failure, meaning the physical disk. With the size of Hard Drives increasing any NAS in a RAID is a good choice, keep your data off your desktop or laptop, how many times have I seen people loose all the family photos due to a Drive Fault, this alone is a good reason to buy a NAS.
However you shoud be Paranoid about your Data, back it up and store it out of your house. Its all good having a 6 Bay unit filled with 3TB drives, but then how do you back that data up... another NAS or rsync server.
You should always think that someone will break in and steal your NAS, or even fire or flood.
However you shoud be Paranoid about your Data, back it up and store it out of your house. Its all good having a 6 Bay unit filled with 3TB drives, but then how do you back that data up... another NAS or rsync server.
You should always think that someone will break in and steal your NAS, or even fire or flood.
RE: RAID doesn't replace a back up by mino on Monday, September 26, 2011
... in beef, as such a statement WILL lead the uninformed to...
Fixed for ya!
Fixed for ya!
RE: RAID doesn't replace a back up by CherryBOMB on Tuesday, September 20, 2011
I have two QNAP;s as well 809's.
photobucket.com/albums/xx165/goldcoin1/P9200347.jpg
for those who do not know the three latest firmwares have been 3.3 , 3.4 , and 3.5 In 3.4 they implemented RAID 10 capability.
Details of the firmware updates below.
3.3> http://www.qnap.com/fw_v3/
3.4> http://www.qnap.com/fw_v34/Default.aspx?lang=eng
3.5> http://www.qnap.com/fw_v35/features.asp
IMO QNAP is the way to go.
photobucket.com/albums/xx165/goldcoin1/P9200347.jpg
for those who do not know the three latest firmwares have been 3.3 , 3.4 , and 3.5 In 3.4 they implemented RAID 10 capability.
Details of the firmware updates below.
3.3> http://www.qnap.com/fw_v3/
3.4> http://www.qnap.com/fw_v34/Default.aspx?lang=eng
3.5> http://www.qnap.com/fw_v35/features.asp
IMO QNAP is the way to go.
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@carpetbomberz four SSDs in RAID-0, just looking to max out the interface/device :)
@pmod sorry, that's Thunderbolt on Windows @nerdtalker is doing the 802.11ac testing, didn't mean to confuse :)
@GlennF nosir, megabytes per second (~7400Mbps) - Thunderbolt rocks :)
928MB/s
RT @nerdtalker: Just got the @buffalotech 802.11ac router and media bridge - gonna test some 802.11ac goodness shortly http://t.co/0Swb17xj
@ghoppe that's a complicated question actually :) starting with the Pegasus since it's been through the Windows cert process
@dark4181 the fastest I hit under OS X was 1000MB/s
@dark4181 I got pretty close here: http://t.co/9Q9yoUgU, just hit 900MB/s, aiming for 1GB/s
Hotplug is supported with the Promise Pegasus, assuming you have the latest beta Windows drivers
ahhhh the Thunderbolt on Windows experience is so much better with this ASUS P8Z77-V Premium board
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"The redundancy helps in data recovery, in case of media failure of any other unforeseen circumstances."
Really, RAID only helps in case of a media failure. Most other "unforeseen circumstances" (which btw really aren't unforeseen...) cannot be helped by a RAID:
- unintentional deletion of a file
- virus
- power black out
- mainboard/PSU failure which fries the system
There are a lot of things that a RAID can do nothing about and need to be taken care of separately. I'm sure you know that, but the statement above made it sound differently. :-)