[HPDD-discuss] Should I care about SSD lifetime?

Hi, I have a lustre 2.4 with mirrored SSDs for MDT/MDS. Should I care about SSD lifetime ? Or is it better to have 15k disks instead of SSDs? My Filesystem is about 50TB but with heavy parallel IO loaded. there are about 20Mln files most of them in the range:10KB-1MB thanks, Arman.