Greetings
We're looking to upgrade two sites which consist of a FAS2020 (7.3.7) and FAS2240-2 (8.1.4-7m) at each site. The 2240-2 systems have a FlashPool accelerated aggregate and the customer is happy with the performance.
The new filers will be either a FAS2552 with additional shelves or we may ditch the entry toasters and go with a FAS8020 system and shelves at each site. If we go with the 2552 we'll keep using FlashPool. If we go with the 8020 we have the option of going FlashCache.
We'd like to evaluate the potential performance improvements of using FlashCache on the 8020 in order to help with the purchasing decision. However, reading TR-3801 it looks like the FAS2000 and 2200 platforms don't support Predictive Cache Statistics (PCS). This is confirmed by trying to enable PCS:
toaster> options flexscale.enable on FlexScale PCS is not active and cannot be enabled.
Are there any other tools which can help us estimate the performance benefits of FlashCache? Or perhaps some key metrics we can collect and analyse?
Cheers Steve
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