VA7410 and Oracle IO Slaves

[Jeffrey Killian]

Any experience with Oracle and virtual arrays?
As we know little about the technology "under the covers" of what makes the VA work, we seek a suggestion on caculating the # of IO slaves we should set when using the VA7410.

We have a new machine (an rp7410 & va7410) with a small number of large (73G) drives to move our production database to. Our present production system (on rp74x0 & FC60) uses a large number (16) of small (18G) drives. In production we set Oracle DBWR_IO_SLAVE=32 (#drives*2) and get pretty good performance.

It appears that the target system will be using 3 drives to house the same amount of data. Oracle suggests setting IO Slaves by calculating 2 x number of drives.