dell-democenter

MODULE 8 - FILESYSTEM BACKUP ENHANCEMENTS -DISASTER RECOVERY BACKUPS AND SUPPORT FOR CLUSTERED FILE SYSTEM -WINDOWS- MODULE OVERVIEW

LESSON 2 - PERFORM DISASTER RECOVERY BACKUPS, RESTORE SYSTEM STATE AND WINDOWS BARE METAL RECOVERY

In this lesson, we will perform Disaster Recovery Backups, Restore System state and do a Windows Bare Metal Recovery

This section is WiP

Review The Assets and Asset Sources

View the Hosts:

Get-PPDMhosts -type APP_HOST -filter 'name lk "win-01.demo.local"'
$BMRAssets=Get-PPDMassets -filter 'details.fileSystem.hostName eq "win-01.demo.local" and name eq "DISASTER_RECOVERY:\\"'
$BMRAssets | ft

Create a new Protection Policy

If not already done from Previous Module, read the Storage System

$StorageSystem=Get-PPDMStorage_systems -Type DATA_DOMAIN_SYSTEM -Filter {name eq "ddve-01.demo.local"}

Next, we create a Schedule for the Filesystem Backup

Backup every : 8 hours Retain for : 5 days Start Time: 08:00:00 PM End Time: 06:00:00 AM

$BMRSchedule=New-PPDMBackupSchedule -hourly -CreateCopyIntervalHrs 8 -RetentionUnit DAY -RetentionInterval 5

Next we create a Policy. This time we use name and description as Variables

$Name="Windows BMR Backup"
$Description="Disaster Recovery Backup"
$BMRPolicy=New-PPDMFSBackupPolicy -Schedule $BMRSchedule -Name $NAME -Description $Description -StorageSystemID $StorageSystem.id -enabled -ignoreMissingSystemStateFiles
$BMRPolicy

Next we assign the Assets:

Add-PPDMProtection_policy_assignment -ID $BMRPolicy.id -AssetID $BMRAssets.id

And Monitor the Activities:

Get-PPDMactivities -PredefinedFilter SYSTEM_JOBS -filter "name lk `"%$Name%`"" -pageSize 3 6> out-null | ft progress, name

Wait until all Activities reach 100%

Starting the Backup

Start-PPDMPLCStage -PolicyObject $BMRPolicy -AssetIDs $BMRAssets.id

Monitor the Backups with:

Get-PPDMactivities -filter "category eq `"protect`" and name lk `"%$Name%`"" -pageSize 3 6> out-null | ft state, progress, name

Or in a loop:

do { Sleep 5;$Activity=Get-PPDMactivities -filter "category eq `"protect`" and name lk `"%$Name%`"" 6>$null; write-host -NoNewline "$($Activity.progress)% "} until ($Activity.state -eq "COMPLETED")

Once the Backup is done, we can Proceed with a System State restore

For the System State Restore (SSR), we will need to mount the “Restored Copies” to our Production host.
We use the latest copy of the “DISASTER_RECOVERY:\” Asset, that is still scoped to $BMRAssets

$BMRHost=Get-PPDMhosts -type APP_HOST -filter 'name lk "win-01.demo.local"'
$BMRRestoreAssetCopy=$BMRAssets | Get-PPDMlatest_Copies
$BMRRestoredCopy = New-PPDMRestored_copies -copyobject $BMRRestoreAssetCopy  -Hostid $BMRHost.id
do {
  Start-Sleep -Seconds 10
  $MountedCopy = $BMRRestoredCopy | Get-PPDMRestored_copies
}
until ($MountedCopy.status -eq "SUCCESS") 
$MountedCopy

Starting the Base Browse

To identify the Mountpoint for the Restored Copy on the Hopst, we need to Browse teh basePath. The Basepath is a tmp directory in the DPSAPPS install Directory, with the PiT Date in unix EPOCH time The Base browse will return the .basepath for the FLR Mount(s).

$Parameters = @{
    HostID               = $BMRHost.id
    BackupTransactionID  = $BMRRestoreAssetCopy.backupTransactionId
    mountURL             = $MountedCopy.restoredCopiesDetails.targetFileSystemInfo.mountUrl
}
$BaseBrowselist = Get-PPDMFSAgentFLRBrowselist @Parameters
$BaseBrowselist

Browse the Available “Sources” in the Browsekist ( e.g. Directories, or, SSR Writers)

With the basePath and the Volumes ( .Sources[]) we can start a Browse for Directories, in this case selected System State Writers

$Parameters = @{
    HostID               = $BMRHost.id
    BackupTransactionID  = $BMRRestoreAssetCopy.backupTransactionId
    mountURL             = "$($BaseBrowselist.basePath)/$($BaseBrowselist.sources[0])"
}
$Browselist = Get-PPDMFSAgentFLRBrowselist @Parameters
$Browselist

We start the Restore of the Complete System State with just the Browselist.Path for complete recover

$Parameters = @{
  CopyObject           = $BMRRestoreAssetCopy
  HostID               = $BMRHost.id 
  RestoreSources       = $Browselist.path
  RestoreLocation      = "DISASTER_RECOVERY:\\"
  RetainFolderHierachy = $true
  conflictStrategy     = "TO_ALTERNATE" 
  CustomDescription    = "Restore from Powershell"
  Verbose              = $false
}

$Restore = Restore-PPDMFileFLR_copies @Parameters
$Restore | Get-PPDMActivities

do {
  Start-Sleep -Seconds 10    
  $Activity= $Restore | Get-PPDMActivities
  Write-host -noNewline "$($Activity.progress)% "
}
until ($Activity.state -eq "COMPLETED") 

Note: The Activity has 2 subtasks ( Jobs) , one is a FLR Mount, and the Second the SSR itself, hence the Activity will return Progress of both Jobs individually
The recovery will take a long time.
Once the Recovery Activity is completed, reboot the Host:

Restart-Computer -ComputerName win-01.demo.local

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