How to Configure Tiered Storage and Write-Back Cache in Server 2012 R2
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#Storage Spaces reserves 256MB on each disk in the pool for internal VD metadata.
Get-PhysicalDisk | Sort Size

$SSDs = "PhysicalDisk4"

$HDDs = "PhysicalDisk8"

Get-PhysicalDisk $SSDs | Set-PhysicalDisk -MediaType SSD

Get-PhysicalDisk $HDDs | Set-PhysicalDisk -MediaType HDD


#List Disks in Storage Pool

Get-StoragePool "Pool 1 (Tiered)" | Get-PhysicalDisk | sort FriendlyName,MediaType | FT FriendlyName,MediaType -auto

#Create Storage Tiers

$SSDt = Get-StoragePool "Pool 1 (Tiered)" | New-StorageTier –FriendlyName SSDTier –MediaType SSD

$HDDt = Get-StoragePool "Pool 1 (Tiered)" | New-StorageTier –FriendlyName HDDTier –MediaType HDD

Get-StorageTierSupportedSize SSDTier -ResiliencySettingName Simple

Get-StorageTierSupportedSize HDDTier -ResiliencySettingName Simple

$SSD_MaxSize = Get-StorageTierSupportedSize SSDTier -ResiliencySettingName Simple | % {$_.TierSizeMax}

$HDD_MaxSize = Get-StorageTierSupportedSize HDDTier -ResiliencySettingName Simple | % {$_.TierSizeMax}

$SSD_MaxSize -= 100GB

Get-StoragePool "Pool 1 (Tiered)" | New-VirtualDisk -FriendlyName "VD1 (Tiered)" -ResiliencySettingName Simple -StorageTiers $SSDt,$HDDt -StorageTierSizes $SSD_MaxSize,$HDD_MaxSize -NumberOfColumns 4 -Interleave 64KB -WriteCacheSize 100GB

$SSD_MaxSize = Get-StorageTierSupportedSize SSDTier -ResiliencySettingName Mirror | % {$_.TierSizeMax}

$HDD_MaxSize = Get-StorageTierSupportedSize HDDTier -ResiliencySettingName Mirror | % {$_.TierSizeMax}

$SSD_MaxSize -= 100GB

Get-StoragePool "Pool 1 (Tiered)" | New-VirtualDisk -FriendlyName "VD1 (Tiered)" -ResiliencySettingName Mirror -StorageTiers $SSDt,$HDDt -StorageTierSizes $SSD_MaxSize,$HDD_MaxSize -NumberOfColumns 2 -Interleave 64KB -WriteCacheSize 100GB

#Optimize Tiers
Optimize-Volume -DriveLetter T -TierOptimize

#Pin a single file to the SSD tier on vortual disk "VD1 (Tiered)" 

#First, list available tiers
Get-StorageTier | FT FriendlyName, MediaType, Size -AutoSize

#Then, pin the file to the SSD tier
Set-FileStorageTier -FilePath "T:\VHD\Library.vhd" -DesiredStorageTierFriendlyName "VD1 (Tiered)_SSDTier"

#and check the result
Get-FileStorageTier -VolumeDriveLetter T

#Remove a file from SSD tier
Clear-FileStorageTier -FilePath "T:\VHD\Library.vhd"


Get-ChildItem T:\VHD -Recurse

$FilesToPin = Get-ChildItem T:\VHD -Recurse

$FilesToPin = Get-ChildItem T:\VHD\*.vhd -Recurse

Foreach ($File in $FilesToPin) {Set-FileStorageTier -FilePath $File.FullName -DesiredStorageTierFriendlyName "VD1 (Tiered)_SSDTier"}

Foreach ($File in $FilesToPin) {Clear-FileStorageTier -FilePath $File.FullName}

Get-FileStorageTier -VolumeDriveLetter T