How should I setup my cache drive mode

[Tigerxue]

I am a new guy for Unraid. I have 2*2T HDs as arrays and 1*500G SSD as cache drives. I want to my docker and VM to use SSD features as much as possible.  As I read other posts, it suggests that to put "appdata" "domains" "system" shares on cache drives, so these shares setting as cache drive:prefer. But it not mentioned "isos" share. If I want to setup a Win10 VM and want it to boot from SSD, how do I set "isos" share cache mode, "prefer" or "yes".  If I set as "yes", the Win10 ISO file which I put in "isos" share will store in disk arrays or cache drives and when Win10 VM starts, will it boot from SSD (cache drive)?

[Squid]

14 minutes ago, Tigerxue said:

how do I set "isos" share cache mode,

Personally, I would set any isos share to be use cache "no"  The install ISO is only used once at install time, and no real need for it to be on the cache drive

15 minutes ago, Tigerxue said:

when Win10 VM starts, will it boot from SSD (cache drive)?

Default location for the vdisks is in the domains share, which should be set to be use cache prefer or only.