There is no good reason to have PST files in your corporate environment
Last week I gave a widely attended webinar on PST file consolidation and one of the questions I received specifically asked if there was a good reason to have PST files in your organization. Well .. except for maybe handing data over to an opposing council there are absolutely NO reasons at all to have PST files in your organization:
- You cannot apply retention or legal hold to PST files
- eDiscovery request are nearly impossible to accomplish as they require searching, discovery and manually opening and searching all the content in them.
- PST files are quite often used when employees leave organizations to take their maildata with them to a competitor. They can store them on an MP3 player and walk out of the door which is a huge security risk for data leakage.
- They are difficult to find except if you use appropriate PST crawlers.
- They’re fragile, especially as they get big. They get corrupted too easily. Users aren’t the best at ensuring that their systems are properly shut down.
- You have to run the Inbox Repair Tool on them way too often.
- Your users don’t back them up. Presumably you do back up the server.
- Your users don’t compact them. They just get bigger and bigger.
- Your users forget their PST passwords. Even though there are unsupported tools to crack them, it can take a significant amount of time to do so.
- You lose single instance store (SIS).
- Messages take up more space in a PST than in an Exchange store.
- It’s simply nuts to store PSTs on a network drive. They just end up taking up more space. Is disk space on your file server cheaper than disk space on your Exchange server? (besides that Microsoft doesn’t support PST files on a File Share)
- For road warriors, OSTs are a much superior storage technique, especially with the improvements made with Outlook. They allow untethered computing at a higher level than with PSTs, plus with the added security of a backed-up information store on the server.
- A PST can be opened by only one machine at a time. This precludes a manager and assistant from working from the same PST simultaneously, and precludes team access.
- You cannot use Outlook Web Access to read your downloaded messages.
- PST files are not secure. Anyone with access to the PST file can open it using the right tools.
- You cannot clean up PST files after virus infestations.
Did I miss anything?
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