Hello,
we are using PBS as a main solution for our PVE environment.
Server has 220GB RAM and currently we have 8x 16TB SAS drive in RAID-10. Apart from that we have 4x 480GB SSD which are currently not used in the pool. I did some experimenting with partitioning and for slog l2arc and special device but it didn't seem to affect speed very much (most likely due to the partitioning ?).
I would like an opinion/advice on how to use these SSD drives the squeeze the most out of them for this kind of setup - my idea was mirrored special device - but i'll rather ask before adding device that cant be removed to my setup
.
Moreover, as you can see below, 8x 16TB drives are connected via SAS Port 1 ( controller is in HBA mode), and Port 2 is used for 4x480GB SSD.
What would be more effective layout given that I want to use those SSDs?. I know that 4x 16TB drive on each port with drives mirrored accross ports would be probably better - but it still doesnt sort out my issue with SSD. Or should I just get over it , use another controller for those SSDs and split my large drives equally across ports?
we are using PBS as a main solution for our PVE environment.
Server has 220GB RAM and currently we have 8x 16TB SAS drive in RAID-10. Apart from that we have 4x 480GB SSD which are currently not used in the pool. I did some experimenting with partitioning and for slog l2arc and special device but it didn't seem to affect speed very much (most likely due to the partitioning ?).
I would like an opinion/advice on how to use these SSD drives the squeeze the most out of them for this kind of setup - my idea was mirrored special device - but i'll rather ask before adding device that cant be removed to my setup
.Moreover, as you can see below, 8x 16TB drives are connected via SAS Port 1 ( controller is in HBA mode), and Port 2 is used for 4x480GB SSD.
What would be more effective layout given that I want to use those SSDs?. I know that 4x 16TB drive on each port with drives mirrored accross ports would be probably better - but it still doesnt sort out my issue with SSD. Or should I just get over it , use another controller for those SSDs and split my large drives equally across ports?
root@pbs4:~# zpool status
pool: pvebackups
state: ONLINE
config:
NAME STATE READ WRITE CKSUM
pvebackups ONLINE 0 0 0
mirror-0 ONLINE 0 0 0
sdb ONLINE 0 0 0
sdc ONLINE 0 0 0
mirror-1 ONLINE 0 0 0
sdd ONLINE 0 0 0
sde ONLINE 0 0 0
mirror-2 ONLINE 0 0 0
sdf ONLINE 0 0 0
sdg ONLINE 0 0 0
mirror-3 ONLINE 0 0 0
sdi ONLINE 0 0 0
sdh ONLINE 0 0 0
errors: No known data errors
root@pbs4:~# ssacli ctrl slot=3 pd all show
Smart Array P840 in Slot 3 (HBA Mode)
HBA Drives
physicaldrive 1I:1:1 (port 1I:box 1:bay 1, SAS HDD, 16 TB, OK)
physicaldrive 1I:1:2 (port 1I:box 1:bay 2, SAS HDD, 16 TB, OK)
physicaldrive 1I:1:3 (port 1I:box 1:bay 3, SAS HDD, 16 TB, OK)
physicaldrive 1I:1:4 (port 1I:box 1:bay 4, SAS HDD, 16 TB, OK)
physicaldrive 1I:1:5 (port 1I:box 1:bay 5, SAS HDD, 16 TB, OK)
physicaldrive 1I:1:6 (port 1I:box 1:bay 6, SAS HDD, 16 TB, OK)
physicaldrive 1I:1:7 (port 1I:box 1:bay 7, SAS HDD, 16 TB, OK)
physicaldrive 1I:1:8 (port 1I:box 1:bay 8, SAS HDD, 16 TB, OK)
physicaldrive 2I:2:1 (port 2I:box 2:bay 1, SATA SSD, 480 GB, OK)
physicaldrive 2I:2:2 (port 2I:box 2:bay 2, SATA SSD, 480 GB, OK)
physicaldrive 2I:2:3 (port 2I:box 2:bay 3, SATA SSD, 480 GB, OK)
physicaldrive 2I:2:4 (port 2I:box 2:bay 4, SATA SSD, 480 GB, OK)
root@pbs4:~#