topic Re: Spare disk count not working in Microsoft Virtualization Discussions

Spare disk count not working

thepunisher — Thu, 05 Jun 2025 06:36:39 GMT

The NetApp that I am running this against has a single spare in it. Why does this command not return any data? It works accurately when I run it against systems with more spares. I don't think is a zero based issue because the count is accurate on all our other systems.

(Get-NaDisk -controller $controller | Where-Object {$_.status -eq 'spare'}).count

Re: Spare disk count not working

cknight — Tue, 24 Jan 2012 19:36:36 GMT

What is the reported status for the disk you know to be a spare?

Re: Spare disk count not working

thepunisher — Tue, 24 Jan 2012 20:07:35 GMT

Here is the results of the Get-NaDisk;

PS C:\Scripts> Get-NaDisk | Where-Object {$_.status -eq 'spare'}

Name Shelf Bay Status UsedSpace PhysSpace RPM FW Model Pool Aggregate

---- ----- --- ------ --------- --------- --- -- ----- ---- ---------

0b.22 1 6 spare 266 GB 268 GB 10k NA03 X276_HPYTA288F10 0

Re: Spare disk count not working

cknight — Tue, 24 Jan 2012 20:10:36 GMT

OK, try this:

PS C:\> Get-NaDisk -controller $controller | Where-Object {$_.status -eq 'spare'} | Measure-Object

Count : 151

Average :

Sum :

Maximum :

Minimum :

Property :

You might also try Confirm-NaAggrSpareLow to quickly find systems with insufficient spares.

Re: Spare disk count not working

thepunisher — Tue, 24 Jan 2012 20:14:27 GMT

That provides the correct result. What's the difference between the commands?

Re: Spare disk count not working

cknight — Tue, 24 Jan 2012 20:17:09 GMT

Since you only have one spare, PowerShell treats the output as a single object rather than a collection, so there isn't a "count" method. Measure-Object is a great way to count or otherwise measure the object(s) piped into it.

Re: Spare disk count not working

thepunisher — Tue, 24 Jan 2012 20:29:59 GMT

I thought I'd share what I finished with. I doubt the drive count is the most elegant solution but it works for me. I wanted to loop through the filers and get a count of all the spares on each system. Here is the code;

$xmldata = [xml](get-content c:\scripts\data_files\netapps.xml)

$filers = $xmldata.netapps.filer | select name

foreach ($a in $filers)

{

trap{"Error connection to " + $a.NAME}

$controller = Connect-NaController $a.NAME

Write-Host $controller, (Get-NaDisk -controller $controller | Where-Object {$_.status -eq 'spare'} | Measure-Object).count

}

Re: Spare disk count not working

timothyn — Wed, 25 Jan 2012 16:41:14 GMT

Nice toolkit usage!

Another trick I use for disk inventory is using Group-Object (aka group) cmdlet:

PS C:\> get-nadisk | group Status | ft Name, Count -auto

Name Count

---- -----

partner 207

dparity 2

spare 151

parity 5

data 25