Tag Archives: CX4

Protocol considerations with VMware

A good video I came across from EMC discussing some storage protocol considerations when looking at VMware.

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Adminstration of Clariion with VMWare… Getting easier

So, EMC released the NFS plugin for VMWare to support storage administration tasks on Celerra from the VI Client a while back, which was very cool and had some very impressive features..    but what about the Traditional SAN man ?! 

Well, yesterday EMC announced a VMWare plugin for Clariion.. 

Product Overview

The EMC CLARiiON Plug-in for VMware simplifies storage administration between the VMware Virtual Center Server and CLARiiON storage systems. It offers end-to-end management of storage related tasks including provisioning of datastores, provisioning of raw device mapping (RDM) devices, and array-based virtual machine replication.

New Feature Summary 

The EMC CLARiiON Plug-in for VMware allows you to perform the following specific tasks directly from the VMware vSphere client:

  • You can provision new datastores (VMFS volumes) or raw device mapping (RDM) volumes
  • Delete existing datastores backed by CLARiiON CX4 storage
  • Creation of virtual machine replicas using array-based replication services
  • The plug-in also gives you the option to publish the replicated virtual machines to a View Manager.

Notes

·       EMC CLARiiON Plug-in for VMware is customer-installable.

·       EMC CLARiiON Plug-in for VMware requires CX4 storage systems running Release 29 FLARE.

 Thats all I have at the minute, but will be picking the brain of the EMC bods as I go to get some more info.

Very usefull feature though !!


EMC Clariion CX4 Virtual Provisioning

The EMC Clariion CX4  is a very flexible box. One of the ways which it enables admins to get the most bang for their buck is by utilising Virtual (Thin) provisioning. This effectivelly enables an admin to create a pool of storage from which smaller volumes of storage (thin LUNs) are provisioned. See below: 

  

(Click Image to enlarge) 

Many people will see thin provisioning as the answer to all their problems in terms of storage management.. No. It still needs to be monitored, managed and some intelligent thinking still needs to go into what volumes will be thin provisioned. The EMC Clariion CX4 also has some limitations around thin provisioning.  

Each model of Clariion has a limit as to how many drives may be contained in a pool of storage for virtual provisioning, so If you’re thinking of positioning a CX4-120 with one big pool of disks (ie 30 disks) for thin provisioning, think again.. please see below : 

   

Also please bear in mind, that although a disk pool for thin provisioning may contain more drives than RAID allows, the maximum size of a single LUN may not exceed 14TB.