Windows 2012 Storage Spaces and HP MSA70 array

In our lab I have setup a Windows 2012 R2 server with an attached array for storage use.  I create space volume using HP's array tool and set it up using a RAID 6. I have already created the storage pool but when I go and create the vDisk and select anything but simple it states only one drive is present. I am ok selecting this since I am using RAID6 in the back group.
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Cliff GaliherCommented:
Storage spaces should never be run on top of RAID. This is officially usupported and unofficially kills performance. Any controller should be put in JBOD mode before configuring storage spaces.

So you have to choose. RAID or storage spaces. But not both.
compdigit44Author Commented:
Since this is my first pass at Storage Spaces this is good to know. So I just need to break my volume at within the HP array application then divide up the disk using Storage Spaces correct? On another note if I am reading the documentation correctly NIC teaming of iSCSI is supported when using the Windows 2012 NIC software correct?
compdigit44Author Commented:
I delete my array using the HP application and not have 25 unassigned drives. When I go into storage space it is not listing any drive nor the default pool
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compdigit44Author Commented:
From what I am seeing I am not seeing a way around not creating a array via the HP application.. if this is the should I select simple or parity?
compdigit44Author Commented:
After a lot of thought since my backed array is using Raid6 I see no harm is setting up storage space using "Simply" mode.... Since the backed is taking care of this.. Am I correct here?
Cliff GaliherCommented:
NO! As I said, you cannot safely run storage spaces on top of RAID.


If you use RAID, do not use storage spaces, period. Just use the RAID array as a standard logical disk.

If you do want to use storage spaces, the equipment must support presenting the disks directly to the OS, often called JBOD mode. Not all controllers or enclosures support this. And if yours doesn't then you simply can't use storage spaces.

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compdigit44Author Commented:
OK... but can I present the storage create from the HP array as an iscsi target without using storage spaces??? I am sorry but I have not done this before. reading about it is one thing but doing it is another
compdigit44Author Commented:
Thank I ended up not using Storage Spaces since the HP array application is already using RAID.

My one finial question is regarding the ISCSI target. If I am using the storage for VMware should I set the allocation size for 64K or does it really matter?

Thanks Again!!!!
Cliff GaliherCommented:
Probably better to close this question and ask that separately. Folks that specialize in VMWare won't be paying attention to storage spaces questions so you won't be getting the most current expertise on that subject. Similarly storage spaces *experts* such as myself, tend to specialize in high density hyper-v deployments, so don't have detailed up-to-date VMWare knowledge. The questions basically don't overlap enough to justify asking that as a follow -up here. And those that can best answer would never see that you asked.
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Windows Server 2012

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