April 2016
Intermediate to advanced
368 pages
8h 6m
English
Content preview from Data Center Storage
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Chapter 18
Reliability and Continuous Data Protection, Synchronous Replication
I’ll jump to the conclusion: Synchronous replication is expensive, so use it only when the situation warrants. Do not use synchronous replication for everything.
The most basic form of synchronous replication is disk mirroring, in which a RAID controller writes every bit twice. The server waits for a response from the RAID controller that the write is complete (the writes to the primary drive(s) and the mirrored drive(s) are complete). Take that example and expand it to be between servers or between storage arrays. Every write to the primary storage is also written to the secondary (target), and the system waits on both “write complete” messages before signaling ...
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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.