Feeds

Microsoft flash research inspires EMC

Data Domain flash-based dedupe coming

Security for virtualized datacentres

The research team produced a paper in 2010 describing such use with a project called ChunkStash (pdf). That paper said:

ChunkStash uses one flash read per chunk lookup and works in concert with RAM prefetching strategies. It organises chunk metadata in a log-structure on flash to exploit fast sequential writes. It uses an in-memory hash table to index them, with hash collisions resolved by a variant of cuckoo hashing.

Having gained his PhD, Debnath joined EMC last November, as a senior software engineer. He is working in the Backup and Recovery Systems division, the one that houses Data Domain and Avamar. Debnath's LinkedIn entry says his "main focus is to build a scalable index to support large-capacity deduplication systems".

EMC doesn't currently employ servers with cache installed. It does have storage arrays with an enterprise flash drive (EFD) storage tier and this can be used as a general FastCache (flash cache) for the array, caching the array's I/Os in pretty much the same was as NetApp's controller-located FlashCache, and caching both reads and writes unlike the NetApp technology which is a read cache only.

What we might look for from EMC is the provision of Data Domain controllers which have PCIe-connected flash, possibly using Fusion-io, STEC or Violin Memory flash product, and having faster deduplication performance.

As an aside there is potential here for Microsoft to use FlashStore in its own storage products, such as Windows Storage Server. That would require, as per the Microsoft server model, server suppliers to step up with X86 servers incorporating a flash memory tier. Noting that Dell is using Fusion-io in this way already and has bought specialised image and file deduper Ocarina, it isn't too much of a stretch to imagine Dell could be shipping FlashStore-like systems in the future.

In fact, El Reg prognosticators think deduplication system controllers and servers for IOPS-intensive applications could have a flash memory tier as a matter of course in a year or two. ®

Security for virtualized datacentres

More from The Register

next story
Just don't blame Bono! Apple iTunes music sales PLUMMET
Cupertino revenue hit by cheapo downloads, says report
The DRUGSTORES DON'T WORK, CVS makes IT WORSE ... for Apple Pay
Goog Wallet apparently also spurned in NFC lockdown
Cray-cray Met Office spaffs £97m on VERY AVERAGE HPC box
Only 250th most powerful in the world? Bring back Michael Fish
Microsoft brings the CLOUD that GOES ON FOREVER
Sky's the limit with unrestricted space in the cloud
'ANYTHING BUT STABLE' Netflix suffers BIG Europe-wide outage
Friday night LIVE? Nope. The only thing streaming are tears down my face
IBM, backing away from hardware? NEVER!
Don't be so sure, so-surers
Google roolz! Nest buys Revolv, KILLS new sales of home hub
Take my temperature, I'm feeling a little bit dizzy
prev story

Whitepapers

Why and how to choose the right cloud vendor
The benefits of cloud-based storage in your processes. Eliminate onsite, disk-based backup and archiving in favor of cloud-based data protection.
Forging a new future with identity relationship management
Learn about ForgeRock's next generation IRM platform and how it is designed to empower CEOS's and enterprises to engage with consumers.
Reg Reader Research: SaaS based Email and Office Productivity Tools
Read this Reg reader report which provides advice and guidance for SMBs towards the use of SaaS based email and Office productivity tools.
Storage capacity and performance optimization at Mizuno USA
Mizuno USA turn to Tegile storage technology to solve both their SAN and backup issues.
Simplify SSL certificate management across the enterprise
Simple steps to take control of SSL across the enterprise, and recommendations for a management platform for full visibility and single-point of control for these Certificates.