Optimizing ssd raid speed w/ HPE SmartArray P440ar

OhJohn

So as I normally have servers w/ SuperMicro or Dell machines (and LSI Megaraid or Dell hw raids):

How do you optimize ssd speed w/ Raid 1 while using a HP server with a HPE SmartArray P440ar?

I already disabled SmartPath, with some gain but I'm still not convinced by the IOPS and throughput.

The disks are SKHynix S31 Gold 1TB SSDs (two).

Would it be best to bypass the SmartArray by using JBOD and software raid?

YABS fio test:

fio Disk Speed Tests (Mixed R/W 50/50):
---------------------------------
Block Size | 4k            (IOPS) | 64k           (IOPS)
  ------   | ---            ----  | ----           ----
Read       | 715.00 KB/s    (178) | 135.99 MB/s   (2.1k)
Write      | 751.00 KB/s    (187) | 136.71 MB/s   (2.1k)
Total      | 1.46 MB/s      (365) | 272.71 MB/s   (4.2k)
           |                      |
Block Size | 512k          (IOPS) | 1m            (IOPS)
  ------   | ---            ----  | ----           ----
Read       | 119.94 MB/s    (234) | 108.18 MB/s    (105)
Write      | 126.31 MB/s    (246) | 115.39 MB/s    (112)
Total      | 246.25 MB/s    (480) | 223.57 MB/s    (217)

OhJohn

No idea how what happened, but without changing anything, I'm now seeing this YABS fio result:

fio Disk Speed Tests (Mixed R/W 50/50):
---------------------------------
Block Size | 4k            (IOPS) | 64k           (IOPS)
  ------   | ---            ----  | ----           ----
Read       | 126.65 MB/s  (31.6k) | 268.09 MB/s   (4.1k)
Write      | 126.99 MB/s  (31.7k) | 269.50 MB/s   (4.2k)
Total      | 253.64 MB/s  (63.4k) | 537.59 MB/s   (8.3k)
           |                      |
Block Size | 512k          (IOPS) | 1m            (IOPS)
  ------   | ---            ----  | ----           ----
Read       | 159.77 MB/s    (312) | 113.37 MB/s    (110)
Write      | 168.26 MB/s    (328) | 120.92 MB/s    (118)
Total      | 328.03 MB/s    (640) | 234.29 MB/s    (228)

vsys_host

Most likely your S.M.A.R.T array does not support trim commands and it is better to do it on JBOD and mount the file system with discard option