Hi new user here. Been a fan of Wendell for a long time. Long time Linux user as well(as far back as debian 3.0 on Old World powerpc macs - BootX anyone?) Tho i still do not consider myself an expert… only a power user.
Anyway on to the topicat hand:
I see many posts on here and other forums about using Intel Optane products as caching drives either for l2arc on freenas or Bcache on linux systems. But I do not see anyone talking about using them as a boot drives. My new desktop build is a ASRock killer sli/ac x370 running a mild OC’d Ryzen 1700.
Got a good deal on a 32gb Optane m.2 nvme and decided to use it as a boot drive. Drive metrics may not be the best but are immensely faster than the 8tb WD Red that I was using temporarily.
Reasons I used Optane as boot:
Optane does not write block for block like nand flash and as such does not use the TRIM command. Using LUKS with a regular SSD and running trim could possibly expose security risks. So it pretty much acts like spinning rust only much faster.
/home partition is on 1tb WD Blue encrypted with LUKs as well using JFS as my fs of choice there as well
10gb of swap is also on the same spinning rust but the chances of needing it with 32gb of DRAM are slim.
Total boot time from pressing the power button to autologin on xfce pausing at LUKs password entry went from 120 seconds to 40 seconds. Chrome also loads nearly instantly right after boot.
for only $45 I think this was a huge improvement. Write endurance hopefully holds up?