December 2013
Intermediate to advanced
1872 pages
153h 31m
English
book
Microsoft® SQL Server 2012 Unleashed
by Ray Rankins, Paul T. Bertucci, Chris Gallelli, Alex T. Silverstein
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RAID Level 1
With RAID 1, known as disk mirroring, every write to the primary disk is written to the mirror set. Either member of the set can satisfy a read request. RAID 1 devices provide excellent fault tolerance because in the event of a media failure, either on the primary disk or mirrored disk, the system can still continue to run. Writes are much faster than with RAID 5 arrays because no parity information needs to be calculated first. The data is simply written twice.
RAID 1 arrays are best for transaction logs and index filegroups. RAID 1 provides the best fault tolerance and best write performance, which is critical to log and index performance. Because log writes are sequential write operations and not random access operations, they ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.