In this example I have a Windows Server 2016 system that has several volumes connected using Fibre Channel, the same steps apply if you are using iSCSI. The volume that I will be working with is PSRepository. This is an PowerShell Gallery folder that contains .ps1 file.
The steps to perform an overwrite:
(1) Connect to the FlashArray
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PS C:> $FlashArray = New–PfaArray –EndPoint 10.21.8.202 –Credentials (Get–Credential) –IgnoreCertificateError cmdlet Get–Credential at command pipeline position 1 Supply values for the following parameters: Credential |
(2) Check the connection to the FlashArray. Optional step, just illustrating here that we have a connection to the FlashArray.
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PS C:> $FlashArray Disposed : False EndPoint : 10.21.8.202 UserName : pureuser ApiVersion : 1.7 Role : ArrayAdmin ApiToken : 58db6abf–1933–553f–1628–0c6e207aba1e |
(3) Retrieve the volume. Optional step as I just want to illustrate the volume exists on the FlashArray.
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PS C:> Get–PfaVolumes –Array $FlashArray | Where–Object { $_.name –like ‘*PS*’ } | Format–Table –AutoSize source serial created name size ——— ——— ———– —— —— 45084F3508BF4614000111A7 2016–11–02T16:21:05Z PSRepository 268435456000 |
(4) Create a snapshot of the PSRepository volume. For this example I use the Suffix and set to Overwrite. This is the snapshot we will restore (overwrite) in a few steps.
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PS C:> New–PfaVolumeSnapshots –Array $FlashArray –Sources PSRepository –Suffix Overwrite source : PSRepository serial : 45084F3508BF461400011AC1 created : 2017–05–12T16:51:46Z name : PSRepository.Overwrite size : 268435456000 |
To prove the overwrite operation takes place I have made copies of the Untitled.ps1 files into the same folder.
Try out FlashBlade
(5) Offline the Windows Server volume.
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$Volume = Get–PfaVolume –Array $f –Name ‘PSRepository’ Get–Disk –SerialNumber $Volume.serial | Set–Disk –IsOffline $true |
(6) Perform the overwrite operation with the snapshot we named PSRepository.Overwrite
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PS C:> New–PfaVolume –Array $FlashArray –Source PSRepository.OverWrite –VolumeName PSRepository –Overwrite source : PSRepository serial : 45084F3508BF4614000111A7 created : 2017–05–12T16:51:46Z name : PSRepository size : 268435456000 |
(7) Online the Windows Server volume.
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$Volume = Get–PfaVolume –Array $f –Name ‘PSRepository’ Get–Disk –SerialNumber $Volume.serial | Set–Disk –IsOffline $false |
From the screenshot below you can see the the original snapshot has overwritten the volume where we had made copies of the .ps1 files.
Go forth and automate!
Cheers,
Barkz
