Fasting for FAST? Well there’s nothing fast about its introduction to market. But as the adage goes, Good things come to those who wait, and wait we have.
So what is FAST? Fully Automated Storage Tiering or another wards ILM reincarnated, with the difference being full policy driven automation that is…
- Pool resources of storage
- Define policy
- Apply to an application
- Let ‘er Rip-Sounds simple huh?
Is FAST one product?
No, FAST is a suite of products rather. For the CLARiiON that includes FAST LUN Migrator, Navi-Analyzer, as well as Navi QOS. In conjuction with Navi analyzer, LUN migrator examines analysis information to target LUN profiles that would benefit from movement to Flash for better performance or movement to SATA for lower storage costs. The core mechanism behind this migration is Virtual LUN technology. Technology that has been apart of the CLARiiON line for a few generations now and has certainly proven itself.
FAST is configured via navicli, supported on CX4 arrays running FLARE 29 and Navi-Analyzer.Its important to note that FAST on CLARiiON’s is unidirectional meaning you can only migrate from FC to SATA disk or FC to Flash. Of course this only applies to CLARiiON’s, bidirectional movement of data is supported on the Symmetrix and Celerra line. And quite the contrary, this doesn’t mean you cant manually migrate a LUN back to FC once the automated migration has completed. I am sure futures will change this one-sidedness, we can only hope..
What to Expect..
Here’s the step-by-step approach (albeit high level) for CLARiiON CX4 FAST:
1.The measurement period for analysis of Fiber Channel LUNs is defined.
2.Analysis is run.
3.Results are assessed and migration of data to Flash and/or SATA is executed.
Futures..
Sub-LUN migrations are planned late 2010 as well as better alignment between FAST implementations across the various platforms (Symmetrix, Celerra and CLARiiON).
That’s it! Look I only got 60 Seconds…
