I'm a bit puzzled about what exactly the "boot-mz" files are needed for on C6500 SUP32 and SUP720 platforms. Are they really mandatory, or do they serve just as backups in case the main IOS image (or the flash media it resides on) gets damaged? Should I put such a boot image on the SP's or the RP's bootflash? I see that there are no boot image releases beyond 12.2.33-SXI12 - does this mean there's no use for a boot image with IOS 12.2.33-SXJ and later?
Thank you.