Storage Spaces Direct (NVMe + SSD + HDD) How to create an SSD only volume.

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I have a 4 node Storage Spaces Direct Cluster. Each node has 4 x 2TB HDD and 2 x 240 SSD.

Recently each node was upgraded to 2 x 800GB NVMe, 2 x 240GB & 8 x 2TB HDD.

 

The NVMe drives seem to be functioning correctly as cache now as shown below.

PS C:\Windows\system32> C:\Support\Show-PrettyPool.ps1

SerialNumber Type Node Size Used Percent
------------ ---- ---- ---- ---- -------
SDM000023B07 NVMe 1 800GB - -
SDM00005FEEB NVMe 1 800GB - -
SDM00005FDB4 NVMe 2 800GB - -
SDM00005FE98 NVMe 2 800GB - -
SDM00002F64A NVMe 3 800GB - -
SDM00002E421 NVMe 3 800GB - -
SDM00002F61C NVMe 4 800GB - -
SDM00002E458 NVMe 4 800GB - -
PHDV653300H9240AGN SSD 3 240GB 2GB 1%
PHDV653300NT240AGN SSD 3 240GB 2GB 1%
PHDV653300GX240AGN SSD 4 240GB 2GB 1%
PHDV653200KB240AGN SSD 4 240GB 2GB 1%
PHDV653200PB240AGN SSD 1 240GB 3GB 1.1%
PHDV653300GQ240AGN SSD 1 240GB 3GB 1.1%
PHDV653300RY240AGN SSD 2 240GB 3GB 1.1%
PHDV6453008M240AGN SSD 2 240GB 3GB 1.1%
W46132GT HDD 1 2TB 699GB 34.9%
W46132JC HDD 1 2TB 700GB 35%
W46133R6 HDD 1 2TB 700GB 35%
W460748A HDD 1 2TB 700GB 35%
W46076RF HDD 1 2TB 701GB 35.1%
W46132EV HDD 1 2TB 701GB 35.1%
W4607B0V HDD 1 2TB 701GB 35.1%
W46073ZG HDD 1 2TB 701GB 35.1%
W46076MQ HDD 2 2TB 738GB 36.9%
W4613465 HDD 2 2TB 740GB 37%
W4606T6G HDD 2 2TB 740GB 37%
W46079P2 HDD 2 2TB 740GB 37%
W46132EC HDD 2 2TB 740GB 37%
W4613293 HDD 2 2TB 741GB 37%
W460ZQGP HDD 2 2TB 741GB 37%
W46076W6 HDD 2 2TB 741GB 37%
W460XJMW HDD 4 2TB 749GB 37.5%
W461349G HDD 4 2TB 759GB 37.9%
W460WNNB HDD 4 2TB 760GB 38%
W46133TF HDD 4 2TB 760GB 38%
W4607710 HDD 4 2TB 761GB 38.1%
W4607B43 HDD 4 2TB 761GB 38.1%
W4607BH9 HDD 4 2TB 761GB 38.1%
W46074KD HDD 4 2TB 762GB 38.1%
W46132VS HDD 3 2TB 802GB 40.1%
W4613151 HDD 3 2TB 802GB 40.1%
W4607605 HDD 3 2TB 802GB 40.1%
W4613278 HDD 3 2TB 802GB 40.1%
W46075L0 HDD 3 2TB 802GB 40.1%
W46073ZE HDD 3 2TB 802GB 40.1%
W46132KZ HDD 3 2TB 803GB 40.2%
W460772P HDD 3 2TB 803GB 40.2%


What I'm trying to work out before I expand my volumes to use up the new space is how can I set or pin a volume so it is using only SSD for capacity?

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