HP 300Gb 320 Ultra 15k and HP 300Gb 320 Ultra 10k Compatibility

[qanda]This question is published in the hardware section for the HP 300 GB 15K Ultra 320 SCSI Disk. Click here to view full specs.[/qanda]Hi. Does anyone know if the HP 300Gb 320 Ultra 15k and HP 300Gb 320 Ultra 10k will work in a SANs device if they are mixed? Trying to replace some 10k drives but they are discontinued. Thanks.