What is RDMA, and why should we care?

DRBD9 has a new transport abstraction layer and it is designed for speed; apart from SSOCKS and TCP the next generation link will be RDMA.

So, what is RDMA, and how is it different from TCP? Read more

Benchmarking DRBD

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.  Read more

DRBD and SSD: I was made for loving you

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. Read more

DRBDmanage installation is now easier!

In the last blog post about DRBDmanage we mentioned

Initial setup is a bit involved (see the README)

… with the new release, this is no longer true! Read more

DRBDManage release 0.10

As already announced in another blog post, we’re preparing a new tool to simplify DRBD administration. Now we’re publishing its first release! Read more

DRBD Proxy 3.1: Performance improvements

The threading model in DRBD Proxy 3.1 received a complete overhaul; below you can see the performance implications of these changes. Read more

“umount is too slow”

A question we see over and over again is

Why is umount so slow? Why does it take so long?

Part of the answer was already given in an earlier blog post; here’s some more explanation. Read more

DRBD 8.4.3: faster than ever

For the people who don’t already have DRBD 8.4.3 deployed: here’s another good reason — Performance. Read more