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HPE announced new model of Apollo server series. Looking at the architecture, it is clear, that HP didn`t only introduced new chassis which can hold up to two nodes. HPE made big change in the way how disks shelfs are connected to the servers. In Apollo 4510 with oneApollo 4520 node or Apollo 4530 with 3 nodes, every node has access to one of disk shelfs. On the other hand in new Apollo 4520 we get two nodes, which has access to all disks installed in the chassis.

This architecture design is perfect fit for parallel filesystem like Lustre which gives Us very dense solution with HA built-in for OST and MDS servers.

 

 

Detailed look at HP Apollo 4520 specification…

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When choosing a disk solution, one of the most important features in addition to its size is the protection of data to be kept there. CEPH technologoy, in addition to the scalable solution, which enables to freely increase the disk space, offers proven data protection methods: Replications and Erasure Code.
What is the difference and which solution to choose in our system ?

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Apparently, users can fill any disk resource. But not in the case of CEPH!
This disk system is built on individual multi-drive servers (nodes) connected to a network. With the addition of subsequent nodes, the system capacity increases linearly and in addition, its efficiency increases. The only limitation is your budget and space in the server room.

Our company has done the production deployment of a very efficient disk cluster using the CEPH system as a shared storage area for the computing cluster. The cluster with a capacity of 1 PB and resistant to failure of any node can reach transfer speeds in excess of 10GBps.

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