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Old 31-10-11, 13:02   #21
a5ian300zx

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Default Re: A guide to Home-Made NAS

hi,

interesting keep us posted, the speed is a issue to me to, at the moment when i copy data from my JBOD to raid 5 on the PC (using Areca card) i can get burst transfer speeds of 300-400 mb/s on average I can get much betters speeds 150+ .

Areca cards a known to be one of the best at the moment I have the 8 port card but you can also get the

24 port
http://www.newegg.com/Product/Produc...82E16816151017

you can even add battery backup in case of power failure. expensive but you can always try buying a used one. I have replaced the fan on mine with Zalman passive cooling.

you can access the menu from a web interface to and check the raid setup, monitor, add raid expansion, migrate raid etc,

its based on intel chipset and its fast. if i did my raid 0 on my intel G2 SSD on this card i would have got much better results.

at the moment i have implemented 8 bays in my PC but only using 5 drives, because i still have my 5 bay Qnap on the network i can transfer data between them really fast using 1GB router.

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Old 31-10-11, 16:59   #22
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Default Re: A guide to Home-Made NAS

I sincereley hope the OP meant those write speeds to be MB/sec not mb/sec (that's Bytes not bits). If not, there is something very seriously wrong. On average, UnRaid users are seeing sustained write speeds of 20 - 30 MB/sec and if we just use 8 bits to a byte this equates to approx 160-240 Mb/sec, without a cache drive (the highest user report is 40MB/sec(about 320 Mb/sec). With a cache drive, these sustained speeds increase to an avergae of 50-60 MB/sec (approx 400 - 480 Mb/sec) with one user reporting (backed up by screen shots) a whopping 103MB/sec (approx 824 Mb/sec).

So I don't think he should write off UnRaid on the grounds that it is too slow. If write speed is a critical factor then adding a cache drive will sort the problem. Of course, it will never be as fast as striping data accross multiple drives as in a "conventional" raid array. It's the price to pay for having data security in the event of more than one drive failing. Personally, I'd rather sacrifice a little speed, knowing that if 2 drives died simultaneously the rest of the data would still be safe, rather than lose the entire contents of the array.
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Old 31-10-11, 22:25   #23
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Default Re: A guide to Home-Made NAS

Yo,

I didn't mean Unraid is BAD but it doesn't fit my purposes right now. I know if a raid array fails you loose all your data and when Unraid fails you only loose the drive. This thread is a way of finding the best system for me...and the only way to be sure is to test a majority of systems and then weigh the cons and pros of each system!
My ideal system is a large, fast and cheap system, with an OS that has good support, preferably free of charge. Fast comes at a price so that's why I will be looking at systems that don't use an expensive Raid card like Areca. I know these cards can move huge amounts of data but I would be happy with speeds I got from my NAS systems,lets say a good 80-100MB/s...if you're used to this ,it's hard to step down again!
The downside of those NAS systems was the lack of enough drives in the array and the price of the unit. Now I am able to make 3 pools of 8 drives in my Norco 4224 and stillhave room inside for 2 SSD cache and boot drives!
Also don't shoot me just yet, this isn't a tutorial rather an experiment and the idea is to have also some sort of a discussion in this thread which I think is working

gr33tz

PS: Areca has the 1880IX-24 which is pretty fast and now there's the 1882ix-24 which has dualcore processors and 1-4 gb cache SDram 1333mhz!!! Eat your heart out!!!
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Old 01-11-11, 09:48   #24
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Default Re: A guide to Home-Made NAS

Originally Posted by siamsquare View Post
Yo,

snip........
Also don't shoot me just yet, this isn't a tutorial rather an experiment and the idea is to have also some sort of a discussion in this thread which I think is working

snip...........
I'm not shooting you, just participating in the discussion. You have "written off " UnRaid as being too slow for your needs. So, I have pointed out that by using a cache drive, it is possible to attain the speeds you desire. You say you want to see 80-100 MB/sec and I've shown you that 103 MB/sec is attainable with UnRaid. I think anyone reading this thread should be made aware of that fact.

Re the Areca 1882Ix -24, at 1,200 US dollars a throw for a PCIe card, I'll not be eating my heart out.
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Old 01-11-11, 20:08   #25
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Default Re: A guide to Home-Made NAS

Yo,

The Areca at that price is indeed a big chunk of the cake so that's why I'm looking into systems where I can use a cheap HBA like the IBM M1015 which can easily be found on Ebay. You just need to reflash them in IT mode
http://lime-technology.com/forum/ind...?topic=12767.0
And your good to go in Unraid or ZFS...
And Yannis I've not written off Unraid it's just not the thing for me atm...
I'll be trying out ZFS and it uses one disk for parity just like Unraid but it spreads the data over the entire pool not one disk like Unraid does. If you have 20 disks in ZFS you can use 19 for data just like Unraid. If you want more data redundancy you choose RaidZ2 so you can loose 2 disks like Unraid (18+2=20). Yes..you loose 1 disk but you gain speed especially with a hybrid system where you can mirror 2 or more write SSD's for cache and even put an SSD for Read cache. You can even mix pools or mirror them.
I'll be having a pool of 4x 3TB, 2 x 8 2TB pools, 2 SSD cache writes and 1 SSD read cache.
Estimated speed should be around 100-150mb/s compared to similar systems. When you loose the HBA card you can always recover your pool by attaching another one but it doesn't have to be the same one unlike hardware raid where you HAVE to use a similar card! I know Unraid supports the use of a cache drive but when you have a 20TB collection waiting to be moved to the server I hardly think any cache drive will be ready for this in Unraid. My needs are more for a continious sustained write!

This thread isn't meant to be a tutorial but more like a blog documenting my excursions into home made NAS (in my case server). It's also a place where discussion is encouraged and an attempt to kick this site in the butt to get the party going again!
It's been boring the last part of the year as no new fresh things have seen the light of day. So untill then (2012) lets have a ball!

gr33tz
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Old 02-11-11, 09:48   #26
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Default Re: A guide to Home-Made NAS

Originally Posted by siamsquare View Post
snip............

This thread isn't meant to be a tutorial but more like a blog documenting my excursions into home made NAS (in my case server). It's also a place where discussion is encouraged and an attempt to kick this site in the butt to get the party going again!

snip...........

gr33tz
In that case, may I suggest that you change the thread title to reflect that, and change it from being a "sticky". Something like "My experiences with Home Made NAS" would be less misleading than having a sticky entitled "A guide to Home-Made NAS".
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Old 02-11-11, 19:55   #27
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Default Re: A guide to Home-Made NAS

Unraid have released a new beta, now supporting latest SAMBA with SMB2!! for my tvix is perfect, can now stream using samba much better than NFS!!!!

//Peter
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Old 02-11-11, 21:20   #28
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Default Re: A guide to Home-Made NAS

Originally Posted by peter_sm1 View Post
Unraid have released a new beta, now supporting latest SAMBA with SMB2!! for my tvix is perfect, can now stream using samba much better than NFS!!!!

//Peter
Yeah I know..been testing on version 5 beta13!
I can't really compare to previous versions but I'm stuck to 33MB/s write speed and 37MB/s read speed( No cache) which is just awful for my purposes! I thought read speeds would be close to the 100MB/s.
I'm currently reading from a WD30EZRX 3TB/64MB/5400RPM/Sata-600 and moving 2TB atm! I'll try fidling with soem settings to speed up the system.
So I'll report back!

gr33tz
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Old 03-11-11, 09:02   #29
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Default Re: A guide to Home-Made NAS

Have you update your smb-extra.conf file?, so SMB2 is enabled? i can copy file from unraid to my W7 on about 50 to 60MB/s
EDIT

But I thing there are more tuning option that can be set in smb.extra.conf file to reach higher speed .
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Old 11-12-11, 19:05   #30
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Default Re: A guide to Home-Made NAS

Yo,

Thread updated with ZFS testing

gr33tz
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