My understanding is that SuSE is the Fedora of SLES, and SLES is what Dell tries to put on some of its storage appliances. This is a kind of appliance that doe

My understanding is that SuSE is the Fedora of SLES, and SLES is what Dell tries to put on some of its storage appliances. This is a kind of appliance that doesn't go to individual consumers though, so, you might have never encountered it. This may also explain the biggest discrepancy from RHEL being in how SLES packages storage-related stuff (eg. SLES is pro-Btrfs, while RHEL is against, SLES is slow to upgrade mdcrypt, while RHEL isn't etc.) But this is just a guess.