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Thread: Choosing a NAS?

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    Re: Choosing a NAS?

    nope raid 5 over 3 disks
    Quote Originally Posted by Jay View Post
    What kind of emergency would need Windows 95? I think you are already in a bad state of emergency when your backup plan is Windows 95.
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    Re: Choosing a NAS?

    very nice.
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    Re: Choosing a NAS?

    Quote Originally Posted by Jay View Post
    very nice.
    did you see the update. Correct drive this time
    Quote Originally Posted by Jay View Post
    What kind of emergency would need Windows 95? I think you are already in a bad state of emergency when your backup plan is Windows 95.
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    Re: Choosing a NAS?

    Quote Originally Posted by alsenior View Post
    did you see the update. Correct drive this time
    Can you re-run your tests for SMB with 4GB files please?

    We don't want cache getting in a way

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    Re: Choosing a NAS?

    Openfiler was giving me a bit of GPT related grief, so for the moment I've switched over to Server 2008 R2, just running a 3.7TB span for the moment. Hopefully that will do the trick until June when I'll have more time to re-jig everything.

    Out of interest, which hardware RAID levels are supported out of the box by the N36L? Some of the material I found last night indicated it was only 0 and 1, which sounds a bit rubbish. Not necessarily surprising, but definitely a bit rubbish

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    Re: Choosing a NAS?

    Quote Originally Posted by spoon_ View Post
    Can you re-run your tests for SMB with 4GB files please?

    We don't want cache getting in a way
    Any recommended benchmarks. Atto only goes up to 2 GB
    Quote Originally Posted by Jay View Post
    What kind of emergency would need Windows 95? I think you are already in a bad state of emergency when your backup plan is Windows 95.
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    Re: Choosing a NAS?

    Quote Originally Posted by alsenior View Post
    Any recommended benchmarks. Atto only goes up to 2 GB
    That should be sufficient assuming your RAID doesn't have that much cache

    Crystal Disk Mark seems like a good tool though.

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    Re: Choosing a NAS?

    Quote Originally Posted by snootyjim View Post
    Openfiler was giving me a bit of GPT related grief, so for the moment I've switched over to Server 2008 R2, just running a 3.7TB span for the moment. Hopefully that will do the trick until June when I'll have more time to re-jig everything.

    Out of interest, which hardware RAID levels are supported out of the box by the N36L? Some of the material I found last night indicated it was only 0 and 1, which sounds a bit rubbish. Not necessarily surprising, but definitely a bit rubbish
    Correct. RAID-0 and RAID-1 only.
    You cannot use the onboard RAID with Vmware ESXi but it does wirk with it in AHCI mode.
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    Re: Choosing a NAS?

    Okay, great. I was mulling over a hybrid RAID 10 of some sort, hence the question, but I think I'm going to go for a RAID 6, as originally suggested by yourself and splash.

    RAID 0 was making me feel edgy, so I bit the bullet and bought a stack more hard drives to get RAID 6 going.

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    Re: Choosing a NAS?

    If you're wondering about Linux software RAID performance:


    That's RAID5 over 3x2TB WD Blacks.
    Last edited by aidanjt; 04-05-2011 at 09:32 PM.
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    Re: Choosing a NAS?

    Running the following:
    Windows XP workstation<--->ESXi4.1<--->iSCSI<--->Windows Server 2008 R2 iSCSI Target on sincle vCPU<--->Software (2008 R2) Mirrored pair of EagerZeroedthick 25 GB disks<--->HDD's in the server itself Via ESXi4.1U1

    Sequential:
    Read: 20MB/sec
    Write: 20MB/sec
    512K Random: the same
    4K random read/write ~0.3 MB/Sec

    Replace the Server 2008 R2 and iSCSI with FreeNAS and NFS
    Sequential:
    Read: ~30MB/sec
    Write: ~17MB/sec
    512K Random ~same as above
    4K random read/write: Around 1MB/Sec

    Replace the Server 2008 R2 and iSCSI with Nexentartor 3.0.0 community and NFS
    Sequential:
    Read: ~30MB/sec
    Write: ~30MB/Sec
    512K random: as above
    4k random read/write: around 4MB/Sec. I suspect the ARC was really kicking in there.

    Openfiler was showing more like Nexentastor figures.


    Problems
    Nexentastor:
    3.0.0:
    Downloaded the virtual appliance.
    Using IE8 to access the web interface crashes the whole appliance, takes the disks offline and it sometimes loses data. This is a known bug it seems
    Performance was very variable. Using Storage Vmotion was often enough to crash the appliance, taking all disks offline. They usually reappeared a while after it had failed. Could also cause the appliance to lose data.
    Tried updating via internet. Didn't work.
    Downloaded 3.0.4 and tried to update. Had to mess around with text files and work a whole load of pointless stuff out so did a fresh install to a new VM.
    Went through setup, went to config webpage and got some stupid proxy error. Seems not uncommon based on their own forums.
    At this point, I decided it was just so unbelievable poorly made I couldn't be bothered trying to fix this broken product any further.

    FreeNAS 8.0RC5
    Simulated a drive failure to test a ZFS mirror on it.
    Everything worked fine but there was no way to tell the drive had failed. Gave up.

    Openfiler 2.99:
    Couldn't even create a mirror. Was fine to create RAID-0 but that wasn't what I wanted. Gave up.

    Windows Server 2008 R2
    Seems to work OK. Haven't tested drive failure yet. Really easy to set up. Performance very poor.


    Apologies for the completely unscientific setup. I have been doing this with limited time and with optimisation, I'm sure the figures can be much higher. Using SMB on Nexentastor, a large file trnasfer started at 4MB/sec, then kept climbing until it hit over 50MB/sec. Also, I was so annoyed at Nexentastor and the huge amount of time spent trying to work around the extremely poor design/testing I had little patience with the other options. I'm sure if I had spent the time of FreeNAS or Openfiler that I had on Nexentastor, I would probably have a nice working system on either by now.
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  12. #44
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    Re: Choosing a NAS?



    This is a 3 drive raid 5 with slow ass seagate lp drives



    this is with 5 Wd-re2gp's
    Quote Originally Posted by Jay View Post
    What kind of emergency would need Windows 95? I think you are already in a bad state of emergency when your backup plan is Windows 95.
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  13. #45
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    Re: Choosing a NAS?

    thats nuts. How can a 3 drive RAID 5 array get rates like that!

    What switch are you using?
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    Re: Choosing a NAS?

    I created mine with Ubuntu's installer, I believe it uses something like this: "mdadm --create /dev/md0 --metadata=0.90 -l5 -c64 -n3 /dev/sd{a,b,c}1".
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    Re: Choosing a NAS?

    I must be glutton for punishment. I'm downloading Freenas 8.0 release right now
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  16. #48
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    Re: Choosing a NAS?

    Just as an FYI for those who have been watching this thread and kicking themselves for missing the deal: it's been extended (again!) until the end of May. (source)

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