Fencing is the process of isolating a node from a computer cluster or protecting shared resources when a node appears to be malfunctioning. As the number of nodes in a cluster increases, so does the likelihood of failure.1
TL;DR: Pairing DRBD with VDO reduces the replication network and storage utilization by ~85% while increasing load by ~0.8. VDO (Virtual Data Optimizer) is a ready-to-run software package that delivers block-level deduplication, compression, and thin provisioning capabilities to Linux. VDO operates inline at a 4 KB granularity, delivering the best possible balance of performance and […]
drbdmanage has been replaced by LINSTOR. You find more information about LINSTOR: https://www.linbit.com/en/products-and-services/linstor/ Thank you and have a fun read! Nowadays, Docker has support for plugins; for LINBIT, volume plugins are certainly the most interesting feature. Volume plugins open the way for storing content residing in usual Docker volumes on DRBD backed […]
As promised in the previous RDMA post, we gathered some performance data for the RDMA transport. Read and enjoy!
This week we continue our SSD testing series with the SanDisk Optimus Ascend 2.5 800GB SAS drives. Background: SanDisk Corporation designs, develops and manufactures flash memory storage solutions. LINBIT is known for developing DRBD (Distributed Replicated Block Device), the backbone of Linux High Availability software. LINBIT tested how quickly data can be synchronously replicated from […]
Over the next few weeks we’ll be posting results from tests that we’ve run against various manufactures SSD drives; including Intel, SanDisk, and Micron, to name a few. The first post in this series goes over our findings of the Intel DC S 3700 Series 800GB SATA SSD drives.