Three-Tier Storage Integration

# Enable jumbo frames on storage vNICs
Set-NetAdapterAdvancedProperty -Name "vEthernet (Storage)" `
    -RegistryKeyword "*JumboPacket" -RegistryValue "9014"

# Verify MTU
Get-NetAdapterAdvancedProperty -Name "vEthernet (Storage)" `
    -RegistryKeyword "*JumboPacket"

# Test jumbo frame connectivity end-to-end
# If this fails, there's a device in the path that doesn't support jumbo frames
ping -f -l 8972 10.10.30.100

# Enable flow control on physical NICs used for storage
Set-NetAdapterAdvancedProperty -Name "NIC1" `
    -RegistryKeyword "*FlowControl" -RegistryValue 3  # Rx & Tx Enabled

# ============================================================
# iSCSI Best Practice Configuration
# ============================================================

# Verify MPIO is configured for iSCSI
Get-MSDSMAutomaticClaimSettings

# Set the global MPIO load balance policy
# Options: None, FOO (Fail Over Only), RR (Round Robin),
#          LQD (Least Queue Depth), WP (Weighted Path)
Set-MSDSMGlobalDefaultLoadBalancePolicy -Policy RR

# Configure iSCSI timeout values for production reliability
# These registry values improve failover behavior
$iSCSIParams = @{
    Path = "HKLM:\SYSTEM\CurrentControlSet\Services\iScsiPrt\Parameters"
}

# MaxRequestHoldTime - seconds to hold requests during path failover (default: 60)
Set-ItemProperty @iSCSIParams -Name "MaxRequestHoldTime" -Value 90 -Type DWord

# LinkDownTime - seconds before declaring a link is down (default: 15)
Set-ItemProperty @iSCSIParams -Name "LinkDownTime" -Value 35 -Type DWord

# Disk timeout - seconds before Windows retries a failed I/O
Set-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Services\disk" `
    -Name "TimeOutValue" -Value 60 -Type DWord

# ============================================================
# Connect to iSCSI Targets with Full MPIO
# ============================================================

# Define your storage target portals (storage array iSCSI interface IPs)
$TargetPortals = @("10.10.30.100", "10.10.30.101")

# Define the initiator (host) IP on the storage network
$InitiatorIP = "10.10.30.11"

# Add all target portals
foreach ($Portal in $TargetPortals) {
    New-IscsiTargetPortal -TargetPortalAddress $Portal `
        -InitiatorPortalAddress $InitiatorIP `
        -ErrorAction SilentlyContinue
}

# Discover targets
$Targets = Get-IscsiTarget
Write-Host "Discovered $($Targets.Count) iSCSI targets:" -ForegroundColor Cyan
$Targets | ForEach-Object { Write-Host "  $($_.NodeAddress)" -ForegroundColor White }

# Connect to each target through all available portals
foreach ($Target in $Targets) {
    foreach ($Portal in $TargetPortals) {
        Connect-IscsiTarget -NodeAddress $Target.NodeAddress `
            -TargetPortalAddress $Portal `
            -InitiatorPortalAddress $InitiatorIP `
            -IsPersistent $true `
            -IsMultipathEnabled $true `
            -ErrorAction SilentlyContinue
    }
    Write-Host "Connected to $($Target.NodeAddress) via all portals." -ForegroundColor Green
}

# Verify connections
Write-Host "`nActive iSCSI Sessions:" -ForegroundColor Cyan
Get-IscsiSession | Format-Table TargetNodeAddress, IsConnected,
    IsPersistent, NumberOfConnections -AutoSize

# Verify MPIO paths per disk
Write-Host "`nMPIO Disk Paths:" -ForegroundColor Cyan
mpclaim -s -d

# List new SAN disks (not yet initialized)
$NewDisks = Get-Disk | Where-Object { $_.PartitionStyle -eq "RAW" -and $_.BusType -eq "iSCSI" }

foreach ($Disk in $NewDisks) {
    Write-Host "Initializing Disk $($Disk.Number) ($([math]::Round($Disk.Size/1GB))GB)" -ForegroundColor Yellow

    # Initialize with GPT
    Initialize-Disk -Number $Disk.Number -PartitionStyle GPT

    # Create partition
    $Partition = New-Partition -DiskNumber $Disk.Number -UseMaximumSize -AssignDriveLetter

    # Format with 64KB allocation unit size (recommended for CSV)
    Format-Volume -Partition $Partition -FileSystem NTFS `
        -AllocationUnitSize 65536 -NewFileSystemLabel "CSV-Vol-$($Disk.Number)" -Confirm:$false

    Write-Host "  Formatted as CSV-Vol-$($Disk.Number) with 64KB allocation units" -ForegroundColor Green
}

# Verify FC HBAs are detected
Get-InitiatorPort | Where-Object { $_.ConnectionType -eq "Fibre Channel" } |
    Select-Object NodeAddress, PortAddress, ConnectionType, OperationalStatus |
    Format-Table -AutoSize

# Install vendor Host Utilities
# Broadcom/Emulex: OneCommand Manager
# Marvell/QLogic: QConvergeConsole
# These set appropriate timeout values and MPIO policies for FC

# MPIO should claim FC devices automatically if the vendor DSM is installed
# Verify with:
Get-MPIOAvailableHW | Format-Table VendorId, ProductId -AutoSize

# Verify FC MPIO paths
Get-PhysicalDisk | Where-Object { $_.BusType -eq "SAS" -or $_.BusType -eq "Fibre Channel" } |
    Select-Object FriendlyName, Size, BusType, OperationalStatus |
    Format-Table -AutoSize

# Check MPIO devices
Get-MSDSMSupportedHW | Format-Table VendorId, ProductId -AutoSize

# View path details per disk
mpclaim -s -d

# Verify SMB3 is available
Get-SmbConnection | Format-Table ServerName, ShareName, Dialect -AutoSize

# Verify SMB Direct (RDMA) status
Get-SmbClientNetworkInterface |
    Select-Object InterfaceIndex, FriendlyName, RdmaCapable |
    Format-Table -AutoSize

# Test SMB connectivity to file server
Test-SmbConnection -ServerName "fileserver.yourdomain.local"

# Create a Hyper-V VM on an SMB share
# First, set the default path to the SMB share
Set-VMHost -VirtualMachinePath "\\fileserver\HyperV-VMs" `
           -VirtualHardDiskPath "\\fileserver\HyperV-VHDs"

# SMB encryption for storage traffic (recommended)
Set-SmbClientConfiguration -RequireSecuritySignature $true -Force

# Install the Pure Storage PowerShell SDK
Install-Module -Name PureStoragePowerShellSDK2 -Force -Scope AllUsers

# Import the module
Import-Module PureStoragePowerShellSDK2

# Connect to the FlashArray
$FlashArray = Connect-Pfa2Array -EndPoint "pure-array-01.yourdomain.local" -Credential (Get-Credential)

# ============================================================
# Pure Storage: Create Volumes for Hyper-V Cluster
# ============================================================

# Create a host group for the Hyper-V cluster
New-Pfa2HostGroup -Array $FlashArray -Name "HyperV-Cluster-01"

# Get the iSCSI IQN from each Hyper-V host and create host objects
$ClusterNodes = @(
    @{ Name = "HV-NODE-01"; IQN = (Invoke-Command -ComputerName "HV-NODE-01" { (Get-InitiatorPort).NodeAddress }) },
    @{ Name = "HV-NODE-02"; IQN = (Invoke-Command -ComputerName "HV-NODE-02" { (Get-InitiatorPort).NodeAddress }) }
)

foreach ($Node in $ClusterNodes) {
    # Create host on the array
    New-Pfa2Host -Array $FlashArray -Name $Node.Name -IqnList $Node.IQN

    # Add host to the host group
    New-Pfa2HostGroupHost -Array $FlashArray -GroupName "HyperV-Cluster-01" -MemberName $Node.Name

    Write-Host "Added $($Node.Name) to host group with IQN: $($Node.IQN)" -ForegroundColor Green
}

# Create volumes for Cluster Shared Volumes
$Volumes = @(
    @{ Name = "CSV-Prod-01"; Size = 2TB },
    @{ Name = "CSV-Prod-02"; Size = 2TB },
    @{ Name = "CSV-Quorum"; Size = 5GB }
)

foreach ($Vol in $Volumes) {
    New-Pfa2Volume -Array $FlashArray -Name $Vol.Name -Provisioned $Vol.Size

    # Connect volume to the host group (presents to all cluster nodes)
    New-Pfa2Connection -Array $FlashArray -VolumeName $Vol.Name `
        -HostGroupName "HyperV-Cluster-01"

    Write-Host "Created and connected $($Vol.Name) ($($Vol.Size))" -ForegroundColor Green
}

# Run on each Hyper-V host to pick up the new LUNs
Update-HostStorageCache

# Rescan iSCSI targets
Get-IscsiSession | Update-IscsiTarget

# Verify new disks are visible
Get-Disk | Where-Object { $_.PartitionStyle -eq "RAW" } |
    Select-Object Number, Size, BusType, FriendlyName |
    Format-Table -AutoSize