AFF
AFF
how can i tell if my system has the flash cache module installed?
It should be in the sysconfig output. E.g.:
slot 8: Performance Acceleration Module II 512 GB
State: Enabled
If you find H/W installed make sure
License is applied (licese command) and options "flexscale.enable" is set to on
options show
flexcache.access none
flexcache.deleg.high_water 90
flexcache.deleg.low_water 50
flexcache.enable off
flexcache.per_client_stats on
flexscale.enable on (same value in local+partner recommended)
flexscale.lopri_blocks off (same value in local+partner recommended)
flexscale.normal_data_blocks on (same value in local+partner recommended)
flexscale.pcs_high_res off (same value in local+partner recommended)
flexscale.pcs_size 0GB (same value in local+partner recommended)
but
license shows
flex_scale not licensed
sysconfig shows I have it
slot 1: Performance Acceleration Module II 256 GB
State: Enabled
1) have the physical card installed (sysconfig shows it, fine)
2) have the software license "flash_cache" installed (not sure)
3) have "options flexscale.enable on" (your output shows it enabled)
4) run "stats show -p flexscale-access -i 1" to see if the card is doing something
stats show -p flexscale-access -i 1
shows
Cache Reads Writes Disk Reads
Usage Hit Meta Miss Hit Evict Inval Insert Chain Blocks Chain Blocks Replaced
% /s /s /s % /s /s /s /s /s /s /s /s
57 0 0 0 0 0 0 0 0 0 0 0 0
57 0 0 0 0 0 0 0 0 0 0 0 0
57 0 0 0 0 0 0 0 0 0 0 0 0
57 7 7 2 72 0 2 0 7 7 0 0 7
57 2 2 4 33 0 0 0 2 2 0 0 2
57 0 0 0 0 0 0 0 0 0 0 0 0
57 0 0 0 0 0 0 0 0 0 0 0 0
57 0 0 0 0 0 0 0 0 0 0 0 0
57 0 0 0 0 0 0 0 0 0 0 0 0
57 9 9 2 81 0 0 0 9 9 0 0 9
57 20 20 4 83 0 0 0 20 20 0 0 20
57 2 2 1 66 0 0 0 2 2 0 0 2
57 0 0 0 0 0 0 0 0 0 0 0 0
57 0 0 0 0 0 0 0 0 0 0 0 0
57 207 207 10 95 0 2 0 207 207 0 0 207
57 0 0 4 0 0 0 0 0 0 0 0 0
57 0 0 0 0 0 0 0 0 0 0 0 0
57 0 0 0 0 0 0 0 0 0 0 0 0
57 0 0 0 0 0 0 0 0 0 0 0 0
57 0 0 0 0 0 0 0 0 0 0 0 0
57 0 0 0 0 0 0 0 0 0 0 0 0
57 0 0 0 0 0 0 0 0 0 0 0 0
57 0 0 0 0 0 0 0 0 0 0 0 0
Cache Reads Writes Disk Reads
Usage Hit Meta Miss Hit Evict Inval Insert Chain Blocks Chain Blocks Replaced
% /s /s /s % /s /s /s /s /s /s /s /s
57 0 0 0 0 0 0 0 0 0 0 0 0
57 26 26 3 89 0 56 0 25 26 0 0 25
57 0 0 0 0 0 0 0 0 0 0 0 0
57 0 0 0 0 0 0 0 0 0 0 0 0
57 0 0 0 0 0 0 0 0 0 0 0 0
57 0 0 0 0 0 0 0 0 0 0 0 0
57 0 0 0 0 0 0 0 0 0 0 0 0
57 0 0 0 0 0 0 0 0 0 0 0 0
57 0 0 0 0 0 0 0 0 0 0 0 0
57 1 1 0 100 0 0 0 1 1 0 0 1
57 0 0 0 0 0 0 0 0 0 0 0 0
57 5 5 1 83 0 2 0 2 5 0 0 2
57 0 0 4 0 0 0 0 0 0 0 0 0
57 0 0 0 0 0 0 0 0 0 0 0 0
57 0 0 0 0 0 0 0 0 0 0 0 0
57 0 0 0 0 0 0 0 0 0 0 0 0
57 0 0 0 0 0 0 0 0 0 0 0 0
57 0 0 0 0 0 0 0 0 0 0 0 0
57 0 0 0 0 0 0 0 0 0 0 0 0
57 0 0 0 0 0 0 0 0 0 0 0 0
Your flash cache card is running fine. Its 57% full (Usage % row) and does replace a few disk reads already (Hit/s row).