8

1) You don't need any special Ethernet cabling for direct connection since 1 GbE era, everything will auto negotiate. https://en.wikipedia.org/wiki/Medium-dependent_interface 2) Broadcom NICs you picked up are shit, you'll get a lot of issues with their performance and stability. Go Mellanox CX4LC family, it's waaaay better. 3) 10GBASE-T has higher ...


8

1) There are many ways to skin a cat (c) ... Depending on how you'll chop your disks and how you'll configure system (HDDs + SSDs for cache Vs. mirror accelerated parity etc) you'll get different usable capacity. 2) It's a bad idea to use S2D on only two nodes. It's fragile and every time you'll have one host down for whatever reason (maintenance, unplanned ...


7

The considered setup will result in 6 TB of usable capacity and 1 TB of cache per node. You can always check it with this calculator: https://s2dcalc.blob.core.windows.net/www/index.html I would also never trust 2 node s2d to keep mission-critical data. Unfortunately, such a setup is still from perfect and seems not thorougly tested. For the similar case,...


6

For Base-T networking, you have to use Cat6a or Cat7 cables. The main difference between them is the distance (up to 55m in Cat6a and 100m in Cat7). However, as already mentioned, SFP+ is much better in case of bandwidth, stability, and latency. From year to year (since S2D was released in GA) I've tried to configure it for 2 nodes and it always fails. The ...


5

Plus one for not to use S2D with two nodes. Starting from poor reliability and ending with short features list in such scenario. There are a lot of topics with comparing S2D with any other solutions, but this one is my favorite. https://community.spiceworks.com/topic/1445491-s2d-vs-starwind-virtual-san For two nodes you can take a look at something like HP ...


5

Don’t do S2D with only two nodes as it’s nothing but begging for troubles! Failover isn’t reliable and you can’t lose second node (obviously!) or second disk/ssd in a row. In RL it means your cluster will collapse with a very high probability during patch process and you’ll have hard times getting your data back... In your particular case you have to re-...


5

You can easily do what you want, check this link out: https://docs.microsoft.com/en-us/powershell/module/storage/get-storagesubsystem Get-StorageSubSystem Cluster* | Set-StorageHealthSetting -Name "System.Storage.PhysicalDisk.AutoPool.Enabled" -Value False As a side effect: I'd check AlwaysOn Availability Groups (AGs) for SQL Server, rather than messing ...


4

You need to perform these steps: 1) Backup your data. 2) Disable S2D calling Disable-ClusterS2D cmdlet. 3) Clean disks. You'll need to run the script from here: https://docs.microsoft.com/en-us/windows-server/storage/storage-spaces/hyper-converged-solution-using-storage-spaces-direct icm (Get-Cluster -Name | Get-ClusterNode) { Update-...


4

Nope. As a workaround you may want to patch the registry and ask your disks to report S2D-incompatible drive type, they will be ignored by S2D by default in such a case. https://www.starwindsoftware.com/blog/resolving-enable-clusters2d-bus-type-support-issue-on-some-storage-controllers


3

I tend to agree with @BaronSamedi1958 that s2d is far from considering as 'production-ready' (not to mention 2 node config which suffers from very low level of data protection). Maybe that's why Microsoft is being banned their 'brainchild' from production use. In any case, the new version will be released March 2018 at the earliest. Until then I'd avoid ...


2

It looks like S2D issue specified here: https://social.technet.microsoft.com/Forums/en-US/74dbd313-741e-424e-8acb-d7d68e22174c/two-node-s2d-cluster-disk-volume-fails-when-one-host-goes-down?forum=ws2016 and here: https://social.technet.microsoft.com/Forums/windows/en-US/4fc1fb86-61fa-4976-8b3f-9e314586fef8/storage-spaces-direct-cluster-virtual-disk-goes-...


2

More spindles will result in faster reads and writes as the load can be spread across more drives. Typically the recommendations you see are based on systems with limited drive bays. My home NAS can only hold 4 drives unless I find some 5.25-3.5 adapters to fit in a couple more. From your example I'd have no choice but to do the 4x4TB with 2x800GB SSDs ...


2

S2D is uber-expensive for what it does in terms of storage-only deployment. It's Datacenter-only WS feature so while HCI scenario kind of makes sense - segregated / SOFS definitely doesn't. I'd leave things AS IS. If you absolutely want SOFS for whatever reason - look @ StarWind VSAN Free. It's much faster, more reliable within 2-Node deployment and... it's ...


1

If you don't set up SOFS, your file server (cluster) has a single point of failure. If one of the storage nodes dies, all the shares that it currently owns will fail over to another node, but all clients will be disconnected, which means that all of those VMs will crash. The share will come back, and the VMs will eventually restart, but this will be very ...


1

After some research because I wanted to know myself, you can use Get-PhysicalDisk -SerialNumber 'WD-WXL1AC73EVDU' | Get-PhysicalDiskStorageNodeView The command will return something like this: StorageNodeObjectId: {1}\\CLUSTOR\ROOT/microsoft/windows/storage/providers_v2\SPACES_StorageNode.ObjectId="{c5edeb90-e0c3-487e-bcb7-6c166cd5db95}:SN:Server1" ...


1

Have an update, After looking around found another post that Failover-Clustering/S2D nodes can not have Domain Controllers installed on them. Storage spaces direct Enable-ClusterStorageSpacesDirect returns with error Failed to start health providers I could not find any other supporting information on this claim. (If anyone can find a reference as to why ...


1

I second the BaronSamedi1958's answer. There is nothing else could be done. And yet Storage Spaces Direct is too buggy to run production. I believe you use Preview version for nothing but evaluation. A similar thread on TechNet https://social.technet.microsoft.com/Forums/en-US/c743e652-012b-4145-893e-105474a9189e/s2d-auto-pooling?forum=winserverfiles


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