Göran, should I assume that you are snapmirroring to a secondary array? If so, then you need to setup up a "MirrorAndVault" policy on your secondary that mirrors the latest active file system and daily and weekly snapshots from the source. You can them specify a retention for you daily or weeklies on the secondary.
Depending on your re-write rate, (daily snapshot size), you may not need to keep that many snapshots; you could just keep 1080 dailies or say 36 monthlies. If on the primary you have 60 dailies, I presume your re-write rate is low; are you keeping 52 weeklies and 36 monthlies as well? Is your volume not out of space?
Or is that what you would like to keep on the secondary?