Thank you all. We also use VMAX where SSD pool is used for few customer Oracle databases. But do not have all flash database yet. I think the cost is still high for SSD/flash storage when coming to big databases (hence not commonly adopted by mid-size market - correct?), but there is no question on performance benefit I think. We saw the EBS R12 upgrade time reduce in almost half just by moving the storage from EMC Clarion to EMC VMAX. Biju Thomas <http://about.me/biju.thomas> On Sun, Dec 14, 2014 at 10:52 AM, Dave Morgan <oracle@xxxxxxxxxxx> wrote: > > All of our client's production datafiles are on RAID 0 equivalent flash. > Sizes range > from 100G to just under 9TB. One client has a lot of redo, one set of > their redo > files is on flash. > > It is the most cost effective performance increase available today. Much > cheaper > than attempting to teach duhvelopers to take pride in their work. > > Our first flash installs were probably 3-4 years ago. We insist on RAID 0 > functional > equivalence. We have yet to perform a recovery (or transfer to the hot > backup) due > to flash hardware failure. I expect the redo flash described above will be > the first to cause us issues. We are ready :) > > None of our clients think it is cost effective to use flash on the hot > backups > or anywhere else. > > YMMV > Dave > > -- > Dave Morgan > Senior Consultant, 1001111 Alberta Limited > dave.morgan@xxxxxxxxxxx > 403 399 2442 > -- > //www.freelists.org/webpage/oracle-l > > >