db ssd journal

Hello all, I recently decided to use SSD in order to improve performance of my cluster. Here is my cluster setup 4 Nodes 36 HDD X 465 GB / node CPU(s) 8 x Intel(R) Xeon(R) CPU E5-2609 v2 @ 2.50GHz (2 Sockets) /node RAM 128GB / node I wanted to move all my WAL DB to new SSD in order to improve...