… minute failover” is possible in DRBD, it doesn’t really explain the full picture. The typical crash recovery process in DRBD is a lot longer: After resource transfer, a filesystem check runs (0-5 seconds). mysqld is started (1-5…: If you have an application that requires 100% consistency, then DRBD is one of your best choices on the mysql-market today.
Post: Finding your MySQL High-Availability solution – The questions
October 16, 2009 By 36 Comments
… need to ask yourself before being able to pick the right one. Below, I listed the most common questions, I might… to keep up. Replication is not the only technology that put a strain on the write capacity, DRBD, a shared storage emulator…) Excellent Heartbeat/DRBD Good NDB Cluster Excellent 5. For what level of growth are you planning? Since NDB Cluster is an integrated…
Comment: Finding your MySQL High-Availability solution – The questions
October 19, 2009 By 36 Comments
… neutral, but be aware that my own background is a lot with Heartbeat/DRBD and NDB cluster. @Gerry: I have seen cluster… are right that I should consider the cost of the solution in term of hardware. Usually, people think NDB is very expensive… ways of replicating data, from my experience, DRBD is more reliable than replication. It is also fairly well established that a cluster manager…
Comment: Death match! EBS versus SSD price, performance, and QoS
February 27, 2011 By 54 Comments
… DRBD, which is one of the ways we have suggested in the past to use DRBD — it generally adds too much overhead to DRBD… really appear different depending on point of view. Which way is right I can’t say. Some, such as the author of Cloud Application Architectures, conclude that the AWS cloud is way cheaper than physical hardware. I haven’t seen that…
Post: Finding your MySQL High-Availability solution - The definitions
October 9, 2009 By 10 Comments
… Sun/MySQL over the last couple of years using Heartbeat, DRBD and NDB cluster and I’ll probably be doing the…. I have built my first DRBD based HA solution nearly 10 years ago. There is quite a lot of confusion surrounding… technology but to help people choose the right one for their needs. This post is first of a series, I…
Comment: Is DRBD the right choice for me?
July 8, 2009 By 17 Comments
… will be introducing parallel replication during the next quarter, which is one answer–and a good one–to your point #1…., Not to disagree at all with your conclusions about DRBD. For the right cases it really can be the cat’s miaow.
Comment: Finding your MySQL High-Availability solution – The questions
October 17, 2009 By 36 Comments
… are unresponsive connection hangs indefinitely when things crash quickly that is the best situation for failover. When a drive fails in… – typically losing a disk. Usually the RAID controller does the right thing though when hard drives don’t just die but… with DRBD with the data being corrupted on the master then corrupting the secondary. With Muti-master the main advantage is the…
Post: Onsite and Remote - getting best of both worlds
July 2, 2009 By 1 Comment
… both approaches have their benefits and drawbacks and mixing them right way allows you to get your problems solved most efficient… for consultant and for participating team – when consulting visit is arranged it is usually the top priority for some of the staff… Availability with MMM or DRBD are good examples. Another good example of efficient Multi-Day visit is when there are multiple groups…
Comment: Thoughts on MySQL Replication
July 16, 2006 By 18 Comments
James, You’re right. DRBD makes great addition to MySQL replication, however it is not alternative if you’re also looking for increased performance, not only high availability. Partitioning on read workload is good way to increase cache efficiency. In Wikipedia case it… hitting web servers. Language provide very good partitioning as there is very limited dependence between them. Working set for each language…
