Capacity planning for Exchange

As I am preparing now for MCSE in Exchange 2013 and reviewing book for 70-341 exam [Core Solutions of Microsoft Exchange Server 2013 (MCSE)].

Just going through chapter about capacity planning and found some useful links in relation to that, thought worth sharing:

How to Calculate Your Disk I/O Requirements (Exchange 2003)

Exchange 2013 Server Role Requirements Calculator v7.6

Disk Performance Testing with JetStress 2013

Exchange 2010 Sizing Cheat Sheet

Exchange 2013 Mailbox Role Counters (Advanced)

Ask the Perf Guy: Sizing Exchange 2013 Deployments

Virtualization of Exchange 2013

Powershell / Exchange 2007 – sum in MB of all mailboxes, deleted elements, .edb file and white spaces for a storage group

Some time ago, I had a need to determine some of storage groups parameters from Exchange 2007, that need become more frequent than I thought, and here is that script.

The script wll return those values like in 3th line of it, so there will be: Storage group name, sum of all mailboxes (in megabytes), sum of all deleted items (in megabytes), size of the *.edb database file, and the amount of white space in each storage group.

$data = Get-Date –f "yyyy-MM-dd";
$MailboxServer = "Here enter the name of your mailbox server"
out-file -filepath StorageGroupsReport_$data.txt -append -inputobject "Storage GRoup Name ($elem);Sum for all mailboxes (MB) ($suma);Sum of all deleted elements (MB) ($sumdel);Database file size (MB) ($sumadb);Sum of White Space (MB) ($SG_WS)"

foreach ($elem in Get-MailboxDatabase){
	$SG_MB = (Get-Mailbox -ResultSize Unlimited -Database "$elem" |  get-mailboxstatistics  | measure-object totalitemsize -sum)
	$suma = "{0:N2}" -f ($SG_MB.sum / 1MB)

	$SGdel_MB = (Get-Mailbox -ResultSize Unlimited -Database "$elem" |  get-mailboxstatistics  | measure-object totaldeleteditemsize -sum)
	$sumadel = "{0:N2}" -f ($SGdel_MB.sum / 1MB)

	$SGDB_MB = (Get-MailboxDatabase "$elem" | foreach-object {add-member -inputobject $_ -membertype noteproperty -name mailboxdbsizeinGB -value ([math]::Round(([int64](get-wmiobject cim_datafile -computername $_.server -filter ('name=''' + $_.edbfilepath.pathname.replace("\","\\") + '''')).filesize / 1mb),2)) -passthru}  | measure-object mailboxdbsizeinGB -sum)
	$sumadb = "{0:N2}" -f ($SGDB_MB.sum)

	$dt = $
	$s = (get-eventlog Application -ComputerName $MailboxServer -instanceID 1074136261 -Message "*$dt*" -newest 1 | select -expand message )
	$d = ($s.IndexOf(" megabytes") - $s.IndexOf("`has "))
	$SG_WS = ($s.Substring($s.IndexOf("has "),$d).trim("has "))
	out-file -filepath StorageGroupsReport_$data.txt -append -inputobject "$elem;$suma;$sumadel;$sumadb;$SG_WS"