Siemens’ Datrium NVMe flash speeds customer software deployment

Siemens’ eMeter group has deployed Datrium NVMe flash storage in a move that has allowed it to slash deployment times for new systems to a few minutes, while restores from backups can be done in seconds.

The upgrade has also allowed it to save hugely on storage admin time as it does away with LUNs as a unit of storage management.

The company’s eMeter division develops and runs software for utility meter data capture. It runs deployments from customer datacentres but also operates test and operational capacity at its own datacentre in the San Francisco Bay Area.

Data can be captured from customers as often as every few minutes and is used for analytics, billing, loss prevention and a number of other functions. Customers can amass tens of TB a year in metering data.

Siemens had previously run NetApp and Nimble Storage hardware. Both ran using the iSCSI block protocol and used LUNs as the basic unit of storage management, but this had become increasingly cumbersome and formed a layer that consumed management time.

Siemens eMeter had around 1,500 customer metering software systems with around 850 LUNs as their basic unit of storage.

“Management of storage pools was a nightmare,” said director of infrastructure, Bryan Bond.

“Everything was managed at the storage level. If eight or 10 of our systems were managed by one LUN and if we did something to that LUN there would be repercussions that we’d need to deal with,” said Bond. “We had to constantly be on top of how much space there was on LUNs, what rate of growth there was, keeping an eye out for when we would need a new one.”

“It all amounted to energy and time to manage and we didn’t want to spend time doing it any more. The question was, how do we make it so it manages itself?”

“We gave EMC, NetApp etc a look but settled early on on the idea of NFS, file level storage, rather than block level storage.”

But even though there are no LUNs in file access storage there is still a lot of management to do in NFS storage, with for example, assignment of data to Raid groups etc.

So, Bond’s team looked at storage products that do away with LUNs and allow users to manage pools of storage directly, namely Datrium and Tintri.

Bond said Datrium won based on its performance. The company deployed four Datrium DVX arrays with 25TB of capacity each. Datrium’s DVX Data Nodes contain 7,200rpm SATA HDDs for bulk storage and NVMe flash as an accelerating cache.