Определите имя экземпляра, которое начинается с RD *, используя PowerShell

Кажется, вы показываете какой-то HTML-отчет и хотите разобрать его с помощью Powershell. Для этого решения вам нужно сохранить отчет в файле .html.

Предположим, вы сделали это и сохранили отчет на диске в D:\Report.html. Тогда вы могли бы сделать:

# read the report file as string
$htmlReport = Get-Content -Path 'D:\Report.html' -Raw

# create a Regular Expression object to capture the RD machines and their issues
$regex = [regex] '<dt>(?<Name>RD[^<]*)</dt><dd>(?<Issue>[^<]+)</dd>'
$matches = $regex.Match($htmlReport)
while ($matches.Success) {
    New-Object -TypeName PSObject -Property ([ordered]@{ Name = $matches.Groups['Name'].Value; Issue = $matches.Groups['Issue'].Value })
    $matches = $matches.NextMatch()
} 

Используя часть отчета, которую вы дали, это даст

Name           Issue                                                                                                                       
----           -----                                                                                                                       
RDxxxxxxxxx    The threshold (2) was met for 15 of 15 minutes. The data points during the evaluation window ranged between 2.393 and 6.054.
RDxxxxxxxxx    The threshold (2) was met for 15 of 15 minutes. The data points during the evaluation window ranged between 2.722 and 6.813.
RDxxxxxxxxxxxx The threshold (2) was met for 15 of 15 minutes. The data points during the evaluation window ranged between 2.481 and 5.909.
RDxxxxxxxxxx   The threshold (2) was met for 14 of 15 minutes. The data points during the evaluation window ranged between 1.412 and 6.588.
RDxxxxxxxxxxxx The threshold (2) was met for 15 of 15 minutes. The data points during the evaluation window ranged between 3.375 and 6.24. 
RDxxxxxxxxxx   The threshold (2) was met for 15 of 15 minutes. The data points during the evaluation window ranged between 2.382 and 6.863.
RDxxxxxxxxxxxx The threshold (2) was met for 14 of 15 minutes. The data points during the evaluation window ranged between 0.418 and 11.   
RDxxxxxxxxxxxx The threshold (2) was met for 15 of 15 minutes. The data points during the evaluation window ranged between 3.059 and 6.667.
RDxxxxxxxxxxxx The threshold (2) was met for 15 of 15 minutes. The data points during the evaluation window ranged between 2.255 and 7.5.  
RDxxxxxxxxxxxx The threshold (2) was met for 15 of 15 minutes. The data points during the evaluation window ranged between 2.545 and 5.291.
RDxxxxxxxxxx   The threshold (2) was met for 14 of 15 minutes. The data points during the evaluation window ranged between 1.691 and 5.6.  
RDxxxxxxxxxxxx The threshold (2) was met for 14 of 15 minutes. The data points during the evaluation window ranged between 2 and 6.755.