As an update to the previous post, we now have the Tech Guide for RDMA performance with non-volatile storage available online.
DRBD9 has a new transport abstraction layer and it is designed for speed; apart from
TCP the next generation link will be
So, what is RDMA, and how is it different from TCP? Continue reading
We often see people on
#drbd or on
drbd-user trying to measure the performance of their setup. Here are a few best practices to do this. Continue reading
When DRBD 8.4.4 integrated TRIM/Discard support, a lot of things got much better… for example, 700MB/sec over a 1GBit/sec connection. Continue reading
In the “Root-on-DRBD” Tech-Guide we showed how to cleanly get DRBD below the Root filesystem, how to use it, and a few advantages and disadvantages. Now, if there’s a complete, live, backup of a machine available, a few more use-cases become available; here we want to discuss testing upgrades of production servers.