3par balancing disks

[terminus]

hello

so

3par 8400 2 nodes
HPE 3PAR OS version
Current 3.3.1.410 (MU2)+P32,P40,P45,P51,P52,P76,P80,P90,P93,P96,P111,P113,P115,P127

- the disks have an uneven distribution of disk space

for example
2020-07-30 11:08:25 MSK Updated PD 4 Devtype FC chunks free 975 total 1675 utilization 41%
2020-07-30 11:08:25 MSK Updated PD 12 Devtype FC chunks free 1228 total 1675 utilization 26%
2020-07-30 11:08:25 MSK Updated PD 13 Devtype FC chunks free 950 total 1675 utilization 43%
2020-07-30 11:08:25 MSK Updated PD 14 Devtype FC chunks free 1242 total 1675 utilization 25%
2020-07-30 11:08:25 MSK Updated PD 16 Devtype FC chunks free 951 total 1675 utilization 43%
2020-07-30 11:08:25 MSK Updated PD 17 Devtype FC chunks free 1217 total 1675 utilization 27%


when i try tunesys, its does not help

q:
how to balancing disks ?



sorry for my english

[MammaGutt]

How are they physically installed? If the hardware is unbalanced, the chunklets will be unbalanced.

[markinnz]

What are your CPGs configured like ? Have you restricted CPGs to particular disks ? Got an odd CPG config ?

[terminus]

contacted support

everything to be good

forgot to indicate what is used AO (tiering)

thx to all

[MammaGutt]

contacted support

everything to be good

forgot to indicate what is used AO (tiering)

thx to all

I still find that very weird. AO works per node pair, not node. So the utilization should be equal on all drives in the same cage.