emcmagic
2 Iron

FAST VP versus Optimizer

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Are these two are referring to two different things, or FAST VP would use Optimizer to determine HOT volumes? These two seems doing the similar thing.

On VMAX here, Optimizer is diabled (shown by running symoptmz query), however, FAST VP is being used (shown enabled by symfast -sid 123 list -state and symfast -sid 123 list -fp).

Thanks for your advice!

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18 Replies
dynamox
6 Thallium

Re: FAST VP versus Optimizer

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Optimize aka FAST-DP is used on thick devices while FAST-VP works on pool devices only

emcmagic
2 Iron

Re: FAST VP versus Optimizer

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FAST is disabled here.

Is FAST-DP = FAST?

People usually disable FAST-DP, and use FAST-VP on VMAX, is that correct?

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dynamox
6 Thallium

Re: FAST VP versus Optimizer

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where did you see FAST ?

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emcmagic
2 Iron

Re: FAST VP versus Optimizer

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# symfast -sid 123 list -state

Symmetrix ID: 000192605065

FAST State                 : Disabled

Reason(s)                  : N/A

FAST Current Activities    : Idle

FAST Perf Time Window      : Open

FAST Move Time Window      : Closed

FAST VP State              : Enabled

Reason(s)                  : N/A

FAST VP Current Activities : RunningPlan

FAST VP Perf Time Window   : Open

FAST VP Move Time Window   : Open

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dynamox
6 Thallium

Re: FAST VP versus Optimizer

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yep, that's FAST-DP

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emcmagic
2 Iron

Re: FAST VP versus Optimizer

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I am curious, why do they call it Optimizer, not FAST or FAST-DP, since FAST is more common and already accepted term?

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dynamox
6 Thallium

Re: FAST VP versus Optimizer

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old naming, existed on Symmetrix waaaay before FAST came about

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emcmagic
2 Iron

Re: FAST VP versus Optimizer

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EMC® Solutions Enabler Symmetrix Array Controls CLI Version 7.6

this is a pretty recent document, on page 288, they still call it Optimizer. Is this Optimizer really the same as FAST/FAST-DP?

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dynamox
6 Thallium

Re: FAST VP versus Optimizer

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yes

FAST and Fully Automated Storage Tiering with Virtual Pools (FAST VP)

EMC Symmetrix FAST (FAST DP) and FAST VP automate the identification of data

volumes for the purposes of relocating application data across different

performance/capacity tiers within an array. FAST operates on standard Symmetrix

devices. Data movements executed between tiers are performed at the full volume

level. FAST VP operates on virtual devices. As such, data movement execution can be

performed at the sub-LUN level, and a single thin device may have extents allocated

across multiple thin pools within the array. Because FAST DP and FAST VP support

different device types – standard and virtual respectively – they both can operate

simultaneously within a single array.3 Aside from some shared configuration

parameters, the management and operation of each are separate.

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