W2012 network share 10TB+

Hi all. I'm looking for some advice on best options to setup a large network share. Currently vmware 5.5 guest machine W2012 with iscsi map to 10tb equallogic volume.

I need to take it past 20tb and equallogic will only allow 15tb volume size.

I am curious what other people are doing when it comes to file shares in 10TB+ size.
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Manikandan NarayanswamySecurity Specialist & IBM Security GuardiumCommented:

Please refer the below links for Storage sizing which may help you to fulfill your requirements

Storage server capacity for the DAS disks depends on the type of partition style which you are using.
MBR disks support a maximum volume size of up to 4 TBs unless they’re dynamic disks and use RAID.
GPT disks support partitions of up to 18 exabytes (EBs) in size and up to 128 partitions per disk.
Hyper-V in Windows Server 2012 contains an update to the VHD format, called VHDX, that has much
larger capacity and built-in resiliency
Support for virtual hard disk storage capacity of up to 64 terabytes.
There is a White paper on storage from Microsoft and if you Google with the keyword "Windows Storage Server 2012 Disk Capacity" you will find the white paper in pdf format.

CSA-ITAuthor Commented:
Thanks for your prompt reply.

I already have the 10Tb volume as a dynamic disks, and I'm keen to know if anyone else has expanded dynamic disk over multiple iscsi volumes.

Is there performance hit or increased risk of corruption / data loss?
David Johnson, CD, MVPOwnerCommented:
That is where you'd want to use storage spaces. We use 60 4TB disks in a JBOD with a mix of SSD and SAS drives and use storage tiering (http://tinyurl.com/storagetiering)
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Cliff GaliherCommented:
While I am a big fan of storage spaces, I'd at least consider splitting up the data if possible. DFS can allow you to represent a unified structure while spreading the data across multiple hosts and drives. And even with storage spaces, there is a performance benefit to allowing more servers to share the load. 10 TB is a lot of data for a single share, under any circumstances. It is almost always better to consider splitting that up when possible. Even some of my larger SOFS clusters backing hyper-v don't have that much on a single share, and they are storing larger VHDXs. I still create multiple CSVs for performance reasons.

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Manikandan NarayanswamySecurity Specialist & IBM Security GuardiumCommented:

You can always use disks larger than 10 TB+ in Striped and Mirrored Volumes. Instead of using one Single File Share. I would recommend to use multiple file shares instead of depending one one. Using one share would represent performance issues.

CSA-ITAuthor Commented:
thanks for your recommendations gents. great info.

I looked into Storage Spaces, though I've come across articles where they're not recommended/supported for guest VMs, unless it's hyper-V. It would also mean a redesign of my storage architecture and an investment into JBOD. I was really hoping there may be another option. perhaps using DFS namespaces.

Whichever method I use breaking up the share into smaller segments sound like the right thing to do.

Again, appreciate your input.
Gerald ConnollyCommented:
@csa-it, and make sure you don't confuse "b" bits and "B" Bytes, sometimes it's obvious from context other times not
CSA-ITAuthor Commented:
@connollyg well spotted. Thanks, will do.
CSA-ITAuthor Commented:
For those interested in the end I used namespaces and recreated top parent folder structure (only 6 folders so was easy). I then split data to different smaller disks/luns and by using standard shares attached them to namespace.
CSA-ITAuthor Commented:
I've requested that this question be closed as follows:

Accepted answer: 0 points for CSA-IT's comment #a40809624

for the following reason:

I researched DFS Namespaces and found several resources recommending this solution. I tested and worked a treat.
Cliff GaliherCommented:
So I suggested DFS. You used my recommendation. And.then accepted only.your own comment as the answer?? Why?
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