How to stop Powershell truncating data?

So FT -wrap doesn't work for you?

Get-Datastore | Select Name, @{N="NumVM";E={@($_ | Get-VM)}} | ft -wrap

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Can you try Format-Custom? This is going to be a ton of info:

Get-Datastore | Select Name, @{N="NumVM";E={@($_ | Get-VM)}} | FC

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Get-Datastore | Select Name, @{N="NumVM";E={@($_ | Get-VM)}} | ft -wrap

Gives me:
PowerCLI C:\> Get-Datastore | Select Name, @{N="NumVM";E={@($_ | Get-VM)}}

Name             NumVM
----             -----
DS-APBRNJ2-DATA2
DS-36            {apmyproj1, apbrarg2, apbrnetwrix2, apbrnetwrix...}
DS-ISOs          {apstudconnect, apbrvcenter, apbrnj2, apstigrhel7...}
*****************
*****************
The second suggestion gives me lots of errors - especially about deprecation --
WARNING: The 'CpuAffinity' property of VMResourceConfiguration type is deprecated. Use the 'CpuAffinityList' property
instead.
WARNING: The 'DrsMode' property of Cluster type is deprecated. Use the 'DrsAutomationLevel' property instead.
WARNING:  The 'ScsiLun' property of VMHostStorageInfo type is deprecated. Use 'Get-ScsiLun' cmdlet instead.
WARNING: The 'VMKernelGatewayDevice' property of VMHostNetworkInfo type is deprecated and will be removed in a future
release.
WARNING: The 'VirtualSwitch' property of VMHostNetworkInfo type is deprecated. Use 'Get-VirtualSwitch' cmdlet instead.
WARNING: The 'PhysicalNic' property of VMHostNetworkInfo type is deprecated. Use 'Get-VMHostNetworkAdapter' cmdlet
instead.
WARNING: The 'ConsoleNic' property of VMHostNetworkInfo type is deprecated. Use 'Get-VMHostNetworkAdapter' cmdlet
instead.
WARNING: The 'VirtualNic' property of VMHostNetworkInfo type is deprecated. Use 'Get-VMHostNetworkAdapter' cmdlet
instead.
WARNING: The value of 'ExtensionData' property of VMHostNetworkInfo type is deprecated and will be

This still didn't work:   PowerCLI C:\> Get-Datastore | Select Name, @{N="NumVM";E={($_ | Get-VM | select -ExpandProperty Name)}} | ft -wrap

Name             NumVM
----             -----
DS-APBRNJ2-DATA2
DS-36            {apmyproj1, apbrarg2, apbrnetwrix2, apbrnetwrix...}
DS-ISOs          {apstudconnect, apbrvcenter, apbrnj2, apstigrhel7...}
DS-25            {apmycf1, apbroc4}

However -- the one with the 'join' does work -- fabulous -- thank you .  Wow, why is this so difficult?

And yes,  the comment I'd sent back earlier was a 'bad copy' leaving off the end.

Glad to help. :)

Oh really?  Join works?  I wonder if that is simpler?

I found that unless you manually create the output your get wraps, I will mess with the carriage returns and lines on the script to get the desired output from FT but it's not perfect.

The only way I can really control the data is to manually put it in variables and print them myself, but then there is the issue of the spacing being terrible.

I keep thinking about creating my own version of FT that does the needful, but join seems like it may be a nice workaround.

I'll have ot play with it.

Solution provided.