DataCore adds NAS head, high-availability
More tunes for SANsymphony-V
DataCore has added NAS acceleration and high-availability to its SANsymphony-V product.
The basic configuration is two mirrored servers. SANsymphony-V software runs in each server with Microsoft Windows Server 2008 R2 and its built-in NAS services, Hyper-V, and Microsoft's Clustered File Share functions, and provides a thinly-provisioned virtual block storage pool underneath them.
The storage media can be the server's own, direct-attached storage (DAS) or an external array. Hyper-V apps access files through the Cluster File Share subsystem and SANsymphony provides the block storage underpinnings of this.
Because the two servers are mirrored, one can act as the the failover target for the other. In normal operations both servers handle file requests through the clustered file system. SANsymphony-V's adaptive caching, with a virtual disk copy, provides a degree of NAS acceleration. This is not filer acceleration in the Avere or Alacritech senses though, as we understand it.
In larger systems the SANSymphony-V software can run in separate servers connected by iSCSI or Fibre Channel. DataCore says its NAS acceleration and high-availability features are cost-effective and scalable, and don't require "enterprise NAS hardware". Nor is expensive hardware required to provide the level of high availability offered by SANsymphony-V.
Existing DataCore SANsymphony-V customers, running Windows Server 2008 R2 Enterprise with Hyper-V, do not need to buy any extra software to support the clustered NAS file-sharing features. Snaphots and Continuous Data Protection are optionally available. ®
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Problem with SANsymphony is...
I looked at this product and it seemed to tick all the boxes. I wanted a SAN solution where you could quickly and easily add an extra TB or so using inexpensive disks as storage needs increased.
Using Tier 3 storage for large multimedia files and having a quick HA backup or even adding a plug in external drive for a quick fix solution.
So I got a quote will all the prices and then asked about what happens when you want to add more storage. Suddenly the SANsymphony software (which runs on Windows 2008 which you had to licence, and all your own hardware) requires a licence to use that extra TB on each server (both of the mirrored nodes).
Therefore to use the £100 1TB drives that you buy you have to go cap-in-hand to the board for almost £1000 to licence it. Seems excessive for the market it is aimed at and really spoilt the flexibility of the product.