topic Re: Finding the oldest snapshot by volume in SnapManager to SnapCenter Transition

Finding the oldest snapshot by volume

Ace — Wed, 04 Jun 2025 09:42:42 GMT

I'm running into an issue where snapshots older than the Snapcenter retention period are not always removed, and I would like to run a powershell script to check for these (and possibly delete anything older. )

This is SQL server FC attached vols, and the SnapCenter workflow is 1) full-backup with 7 days retention -> 2) snapmirror copy also with 7 days retention -> 3) snapvault copy to a separate aggr with 14 days retention.

To check the snapshot dates in chronological order, I am running:

Get-NcSnapshot | Where-Object {$_.Volume -match 'sql_srv_volx'} | Sort-object -property Created

This is reporting all dates for the relevant volumes, but is it possible to show the oldest snapshot only? I've tried variations of -CreateTime >7days, but must be doing something wrong.

Re: Finding the oldest snapshot by volume

psx — Thu, 21 Dec 2023 13:27:18 GMT

I am no PowerShell guru, but this seems to work (snapshots older than 55 days):

PS > Get-NcSnapshot -ontapi | Sort-Object -Property Created | ? { $_.Created -lt (Get-Date).AddDays(-55) } Name Volume Vserver Created Total Cumulative Dependency ---- ------ ------- ------- ----- ---------- ---------- snapmirror.xxxxxxxx-x2... xxxx_xxxx xxxxxxxx 01.05.2023 264,0 KB 264,0 KB snapmirror xxx_daily.2023-10-2... xxxx_xxxx xxxxxxxx 23.10.2023 252,0 KB 252,0 KB xxx_daily.2023-10-2... xxxx_xxxx xxxxxxxx 27.10.2023 272,0 KB 524,0 KB xxx_daily.2023-10-2... xxxx_xxxx xxxxxxxx 29.10.2023 340,0 KB 864,0 KB

Re: Finding the oldest snapshot by volume

Ace — Fri, 29 Dec 2023 19:38:48 GMT

Thanks, this was helpful in piecing together my final script.