Category Archive for: ‘CEPH’

CEPH Storage for VMware vSphere

CEPH is a great choice for deploying large amounts of storage. It's biggest drawbacks are high storage latencies and the difficulty of making it work for VMware hosts. The Advantages of CEPH. CEPH can be installed on any ordinary servers. It clusters these servers together and presents this cluster of servers as an iSCSI target. Clustering (of servers) is a key feature so CEPH can sustain component failures without causing a storage outage and also to scale capacity linearly by simply hot...

Reducing Write Latencies in CEPH Storage

CEPH is a popular open source storage software. However its write latencies are high. VirtuCache caches CEPH volumes to in-host SSDs and by doing so reduces VM level latencies considerably.

A Counter Intuitive Approach to Solve the Peculiar Problems of Video Storage

By not using dedupe, compression, or RAID, using slow HDDs in centralized storage, and moving SSDs to compute hosts, we arrived at low price per capacity and performance for video storage.

Here are unique requirements of video storage, some are obvious and others not so much, that inspired us to put together a different architecture than the conventional storage OEM design.

CEPH Storage is Ideally Suited for Disaster Recovery (DR) Infrastructure

CEPH storage from Virtunet has all the features of traditional iSCSI SAN with the exception that it is reasonably priced because it uses commodity servers with all off-the-shelf hardware. And so it is ideally suited for backup and DR storage which needs to be cheap above all else.

Shared Disaster Recovery Infrastructure using CEPH storage.

Why deploy Disaster Recovery(DR) infrastructure when you already have backups? The main reason to deploy DR infrastructure is to protect against the rare case where you lose your entire datacenter. In case of a datacenter wide outage, you can flip over to your offsite DR data center. The DR datacenter is a replica of your entire production infrastructure, from applications running in VMs to servers, storage, and network configuration. DR and backups though related are two different things...