Comment Re:20x faster (Score 1) 172
At the moment SSD's are excellent when you need high I/O from a few disks up to say a few TB however if you look at enterprise storage solutions of 10's or even 1000's of TBytes you are still looking at spinning media with large cache front ends (BTW I am talking about $20k up to many millions of dollars storage area networks).
Well, what you're usually looking at is a storage system with multiple types and speeds of disks that automatically moves data through the tiers depending on the frequency and type of access. SSDs will form one of these tiers. If the storage system is any good, it will also let you manually pin or hint specific subsets of your data so that they are always held on the fastest tier (ie: SSDs).
Since the _active_ subset of data even in quite large organisations is generally relatively small, a few hundred GB or a few TB of flash will often give 90%+ of the real-life performance that a pure flash array would.