Commands › Exchange Online

Enable-MetaCacheDatabase

Exchange Online ExchangeOnlineManagement Enable-*

Enable the metacache database on Exchange 2019 Mailbox servers. The metacache database stores mailbox database indexes and secondary copies of metadata on solid state drives (SSDs) to improve search latency and user logons.

Quick start script

# Enable-MetaCacheDatabase — quick start (serv365.ai)
# 1. Connect (app-only shown; interactive: omit the certificate parameters)
Connect-ExchangeOnline -CertificateThumbprint $thumb -AppId $appId -Organization $org

# 2. Capture the current state first — you cannot roll back what you never recorded
$before = Get-MetaCacheDatabase
$before | Format-List

# 3. Make the change (dry run first)
Enable-MetaCacheDatabase -Server <String[]> -WhatIf
Enable-MetaCacheDatabase -Server <String[]>

# 4. Verify and diff
$after = Get-MetaCacheDatabase
Compare-Object ($before | Out-String) ($after | Out-String)

Syntax

Enable-MetaCacheDatabase -Server <String[]>
 [-Confirm]
 [-WhatIf]
 [<CommonParameters>]

Parameters (3)

Parameter	Type	Required	What it controls
-Server	String[]	yes	The Server parameter specifies the Mailbox server where you want to enable the metacache database. You can use any value that uniquely identifies the server. For example:
-Confirm	SwitchParameter		The Confirm switch specifies whether to show or hide the confirmation prompt. How this switch affects the cmdlet depends on whether the cmdlet requires confirmation before proceeding.
-WhatIf	SwitchParameter		The WhatIf switch shows what the command does without making any changes. You don't need to specify a value with this switch.

Reference facts derived from Microsoft documentation, © Microsoft, licensed CC BY 4.0; restructured with original guidance by serv365.ai.