New-virtualdisk does not create tired storage, but gui does.

Question

Hi
I'm trying to create a Storage Pool with a virtual disk with tierd storage.
Got 2 SSD and 2 HDD.
Created my pool and then I'm trying to create a disk using my ssd and hdd.
$ssd_tier = New-StorageTier -StoragePoolFriendlyName "SnabbPool" -FriendlyName SSD_Tier -MediaType SSD
$hdd_tier = New-StorageTier -StoragePoolFriendlyName "SnabbPool" -FriendlyName HDD_Tier -MediaType HDD
New-VirtualDisk -StoragePoolFriendlyName "SnabbPool" -FriendlyName TierdDisk1 –StorageTiers @($ssd_tier, $hdd_tier) -StorageTierSizes @(110GB,2700GB) -ResiliencySettingName Mirror -WriteCacheSize 5GB -NumberOfColumns 1
The Disk gets created, but it's not tierd.
If a use the GUI i can create a tierd disk but then i only get 1GB of cache...and i want to do it with powershell.
Anyone seeing an error in mylines ?
One thing i think is wierd is that if i run a get-storagaTier after new-storagetier i get nothing returned.

Answer 1

Hi,
Do you mean that you cannot get any storage tier when you run Get-StorageTier command? Is there any error message in the Event Log? Please run the command “Get-Storagepool -FriendlyName SnabbPool | fl” and “Get-VirtualDisk -FriendlyName TierdDisk1| fl” and
post the commands output.
You could refer to the article below to monitor storage tier performance:
Monitor Storage Tiers Performance in Windows Server 2012 R2
http://technet.microsoft.com/en-us/library/dn789160.aspx
Best Regards,
Mandy 
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