Getting my head around SOFS

Hi,
I am really struggling to get my head around how to actually build a SOFS using server 2012 R2 which is supposed to be able to use iSCSI disks. I am trying to provide high storage availability should a storage system fail in one of our buildings. this is
what I have:
Building 1:
1 Server 2012 R2
1 NAS which supports the creation of iSCSI targets and LUNs
Building 2: - the same as above.
what I want to achieve is a storage system (probably using SMB) for hyper-v virtual machines reside on, whereby any server and/or storage system becomes unavailable and the storage stays up in an active-active node. I have created 3 iSCSI targets and LUNs
on each NAS, on server 1 i attached to NAS1 iSCSI targets, on server 2 i attached to NAS2 iSCSI targets.
I am no unsure how to get these into one cluster shared pool/space. I have got as far as making a storage pool on each of my 2 nodes under "pools" in failover cluster manager I have cluster pool1 owned by node 1, and cluster pool2 owned by node2.
I created a virtual disk for cluster pool1. then created a volume on that. under disks in FCM it shows assigned to available storage, owner node1
I tried to create a virtual disk for cluster pool2 but it wont attach, in server manager i see an error and trying to attach it shows "Error attaching or detaching virtual disk. failed to attach virtual disk to node2. access denied"
i can see in FCM it has been added to the disks as available storage but is offline and owned by node1 - i cant move the ownership.
am I understanding SOFS wrong here or should my scenario be possible?
thanks
Steve

Hi,
thanks for such a great detailed answer, you have given a lot there. just a couple of things though:
your point 3 states online VM's cannot be deduplicated - are you referring to Server 2012 or R2, as I believe in R2 they now can be Deduped. Does StarWind support Deduplication or is it best to use Microsofts version? can StarWind Dedupe be used in a HA
image?
in point 5 you have said about SQL and Exchange cant be used in Hyper-v replica. are you saying that if I had a SQL or Exchange virtual server I can't replicate it to a hyper-v replica server, why would this be? can StarWind be used to send a replica of
the VM's to another destination server and function similar to hyper-v replica? I like the idea of 30 seconds replications for servers which are close enough for us to do this, and the 15 minutes for servers in further locations.
thank you
Steve
1) With R2 MSFT had improved VDI scenarios. But still deduplication of a running VMs is not supported. See:
What's New in Data Deduplication in Windows Server 2012 R2
http://technet.microsoft.com/en-us/library/dn486808.aspx
Important
In Windows Server 2012 R2, the performance of VHDs optimized through Data Deduplication is fully tested and supported only on VDI workloads. The same performance gains are not guaranteed for non-VDI workloads running on Hyper-V virtual machines; nor does Microsoft
offer support for these scenarios in Windows Server 2012 R2.
Extending Data Deduplication to new workloads in Windows Server 2012 R2
http://blogs.technet.com/b/filecab/archive/2013/07/31/extending-data-deduplication-to-new-workloads-in-windows-server-2012-r2.aspx
Is Hyper-V in general supported with a Deduplicated volume?
We spent a lot of time to ensure that Data Deduplication performs correctly on general virtualization workloads. However, we focused our efforts to ensure that the performance of optimized files is adequate for VDI scenarios. For non-VDI scenarios (general
Hyper-V VMs), we cannot provide the same performance guarantees.
As a result, we do not support deduplication of arbitrary in use VHDs in Windows Server 2012 R2. However, since Data Deduplication is a core part of the storage stack, there is no explicit block in place that prevents it from being enabled on arbitrary workloads.
Sure we (StarWind) do support running VMs deduplication.
2) You can replicate running VMs with SQL Server and Exchange with Hyper-V Replica the problem is you're not going to have consistent content on the destination side. See:
Support policy for Microsoft SQL Server products that are running in a hardware virtualization environment
http://support.microsoft.com/kb/956893/en-us
If multiple SQL VMs are tightly coupled with one another, individual VMs can failover to the disaster recovery (DR) site but SQL high
availability (HA) features inside the VM need to be removed and re-configured after VM failover. For this reason the following SQL Server features are not supported on Hyper-VM Replica: 
Availability Groups
Database mirroring
Failover Cluster instances
Log shipping
Replication
Does Exchange Support Hyper-V Replica
http://blogs.technet.com/b/rmilne/archive/2013/07/29/exchange-and-hyper-v-replica-support.aspx
In short, Exchange does not support the Hyper-V Replica feature.  Exchange has a long history of supporting virtualisation from Exchange
2003 onwards.  It is fully supported to install Exchange 2007, 2010 or 2013 as
a virtual machine on Hyper-V, but using the Hyper-V replica feature is not supported.
The Exchange 2010 virtualization support requirements and Exchange
2013 virtualization requirements pages are rather detailed in what must and must not be done on an Exchange virtual machine or hypervisor.  If what you want to do is not listed, then that should set an alarm bell off…. 
The Exchange virtualization support statement has never listed Hyper-V replica, though some of the Hyper-V content has alluded to running Exchange as a replicated VM.  
You cannot use StarWind to replicate VMs (not any more at least) as we're working on a LU level so you replicate all "linked" VMs located on LU/CSV.
Hope this helped 
StarWind VSAN [Virtual SAN] clusters Hyper-V without SAS, Fibre Channel, SMB 3.0 or iSCSI, uses Ethernet to mirror internally mounted SATA disks between hosts.

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    I'm on a 2010 MBP i7 (dual core) with a 7200 RPM drive for what it's worth since I know the h.264 one largely depends on the hardware.

    Proxy Media
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    Nope. You don't need to do the "Optimze Media" at all, you can use with the Proxy media for your working edit, then switch the references back to the Original media for mastering/export.
    ... or can I just have it refer to the h.264 .mov files and get equivalent results?  If I can, this seems like a good compromize.
    Exactly. And yes it is, an excellent compromise. Start working with the original media right away, but have FCPX create proxies in the background (which it switches to using as soon as each one becomes ready); if at any point you need to check a clip in place in the timeline in full resolution then you can just quickly toggle your general playback preference to "Use original", otherwise just edit away with the proxies and then switch that preference back to "Use original" when you are ready to output.
    Editing directly with the h.264 footage
    I have read that some people are dropping the footage directly into the timeline and editing without any real problems.  Others say it will cause performance issues and to always optimize.
    Yep, you can edit just with the original media if you choose but your source footage is H264, a dreadful edit codec by any measure, and certainly you will get much better timeline performance if you work with transcoded Optimized or Proxy media instead.

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    Obviously there are some tricks I'm missing here. If someone could set me straight, or mention some resources for this specific question, I'd be very grateful!

    as a photographer I know the frustration you suffer from , very well.
    Once upon a time photographers went to the "darkroom". there they cutted stripes out of photopaper, exposed them in diffrent lengh to the light under the filmp rojektor.Then developed them and compared to decide, how finaly to expose and develope the Image.
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    f.exemp.: +10% contrast, -50 % Booster, +20% saturation. then "save as" and
    name the file xxxxx_v1.jpg . Next version you increase all changes values for another 10 %. then send the pictures to the lab and see what comes close to your expectations.
    B ) change the fotolab :
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    next you bring one picture file to them to print. next you make the correction you want to come close to what you want. so here we are what Micheal suggestet.
    C ) do it yourself :
    get your own good printer like Epson 2400....
    Please don belive that a cheap printer does the same like the one mentioned above.
    here you will spend more money than on way A+B, but in the end you´ll have prints wich look like you want, on the fineart paper you want them and they will last very long time.
    D) the professional way wich may include also B+C:
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    I use use one professional EIZO CG21" and one semi-prof. EIZO FlexScanL985EX(21") and the diffrence is importand betwee the two.
    But i need only one to be Print Proof ready.
    Before i was always afraid when i gave the picture file to my client, because of what my pictures look like once it is printet. Now the outcome is right or differs only very little from what I saw on the screen.
    my calibratiob tool is EYE ONE.
    I write in such lenght, because in the beginning I thought I could get arround to by prof. hard-and software. I lost a lot of time and money in that way. so now i know
    Cameras I use: D200, D5
    G5 dual 2.3/4,5 gigRam/ATI 9600 128MB-PB G4 12"   Mac OS X (10.4.2)   EIZO CG 21"+EIZO L985ex 21"
    G5 dual 2.3/4,5 gigRam/ATI 9600 128MB-PB G4 12"   Mac OS X (10.4.8)   EIZO CG 21"+EIZO L985ex 21"

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    I'm missing something..
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    ...1
    ...2
    ...3
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    C
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  • Need help getting my head around this.

    I'm new to this Java programming lark but it has always interested me so i thought I would give it a go but I am stumped on a project I'm working on. Maybe there is a simple answer that I just can not see.
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    wigglet wrote:
    I'm new to this Java programming lark but it has always interested me so i thought I would give it a go but I am stumped on a project I'm working on.
    cough
    >
    The problem I am having is linking elements in ArrayLists. I have two arraylists, accounts and groups. accounts is sorted using a compareTo method to be organised by their level (an integer). What I need to do though, is place the accounts into groups sequentially so that the groups are mixed with accounts of different levels. I wouldn't like the code but if someone could help me see what I need to do that would be great, it should work like this.
    Daniel 5 ----> group 1
    Graham 5 ---> group 2
    Andy 5 ---> group 1
    John 4 ----> group 2
    Clark 4 ---> group 1
    Kevin 3 ---> group 2
    I'm guessing loops are involved but I can't see how it would work around. Any help would be greatly appreciated thanks a lot :)Quick answer : write comparators
    Longer answer : I don't understand some parts of your question. Perhaps you want a two stage sort? Perhaps something else. I'm not sure how these people relate to the groups in your code, that appears to be a key question here for the data you want to display.
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    Welcome to Apple's user-to-user discussion forums.
    Are you getting the podcasts and audiobooks through the iTunes Music Store or from other sources?
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