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  • Blog Post: Backup compression and Virtual Device Interface (VDI)

    People often ask if they can get native SQL Server backup compression using VDI interface. The simple answer is 'yes' but there are few things you need to be aware of as described below. You can get details on VDI by clicking link-to-VDI-Specifications . Within the VDI protocol, the backup application...
  • Blog Post: When is too much success a bad thing?

    I was talking to a customer the other day who had an interesting problem: Successful backups. Specifically, their problem had to do with the success messages that SQL backup puts in the SQL errorlog and the system event log. Seems like a nice, friendly thing to do right? Drop a note that your backup...
  • Blog Post: Fuzzy backups and RESTORE DATABASE WITH STOPAT

    So what’s a “fuzzy backup” and how does it relate to STOPAT? There has been some confusion about what RESTORE DATABASE WITH STOPAT does, if it works, and why it behaves as it does. This is not about RESTORE LOG WITH STOPAT, but only RESTORE DATABASE. To understand how this works and why, you need...
  • Blog Post: The Ins and Outs of Offline Files

    First blog post of the year from TechEd! Well, Kimberly and I arrived a day early hoping to chill out in the sun by the pool but contrary to all expectations the weather sucks today – it’s actually much better in Seattle. Instead we're hibernating in our room blogging and having a Blokus re-match – last...
  • Blog Post: Can you mix-n-match backup devices?

    I was asked this question yesterday and didn't know the answer so thought it would be good for a quick post. Can you use devices from your main and mirrored backup media sets together to perform a restore? The code below creates a single-device backup and then examines it. BACKUP DATABASE AdventureWorks...
  • Blog Post: Oh no – my backup is corrupt too! Help!

    Funny how a bunch of people all seem to have the same problem at the same time. Maybe it’s just that people don’t want to talk about corruption until someone else does – it’s like a dark secret that once let out of the bag – everyone talks. The common HA/DR issue over the last few days on the newsgroups...
  • Blog Post: What Master???

    I've come across a few interesting DR scenarios lately, (interesting in the sense that the resolution wasn't immediately obvious, and fortunately the answer didn't start out with "update your resume...") The situation that comes to mind is a customer who was doing all the right things. He had a...
  • Blog Post: Why you should NOT optimize your backup strategy for backup speed

    Sounds kinda funny, doesn't it? I mean, who here doesn't have someone breathing down your neck every time you go past your backup window? So why would you NOT optimize for fast backups? It just makes sense. You do backups every day, so they should be optimized. Two words: Disaster Recovery If...
  • Blog Post: Just why are you backing up your database?

    So, I'd like to make a couple of assertions about backup and disaster recovery that will hopefully get you to thinking, and just might change the way you think about the topic. There are two distinct motivations for doing backups, and they imply differing requirements and solutions. OK, what am...
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