Deduplication metadata on a separate fast disk. How can I verify that?

[Aleksey Maksimov]

Hello QUADStor Team!

QUADStor Storage Virtualization 3.2.13 on Debian GNU/Linux 9.3 (stretch)

1) I renamed "Default" pool to "SSD-Metadata-Pool". In this pool I added a fast SSD drive
2) Then I created a new pool "HDD-Backup-Pool" and added to it the slow disks. This pool has disabled features "Enable Dedupe Metadata"/"Enable Logs"
3) Then in the pool "HDD-Backup-Pool" I created the "Backup-vDisk1" virtual disk with enabled option "Enable Deduplication"

Now the question

How can I be sure that the "HDD-Backup-Pool" deduplication metadata is on the fast disk of the "SSD-Metadata-Pool" pool ?
How can I verify that?

[QUADStor Support]

If the pool "Enable Dedupe Metadata" is disabled then there are no
tables initialized for that pool. When you try to add a disk to this
pool without a disk configured in the Default pool the disk addition
will fail. This is because there is no way to store the deduplication
entries for the vdisks in the pool.

Alternatively when you add a disk to a pool with "Enable Dedupe
Metadata" the initial used space of the disk is much higher than when
adding the first disk to a pool with "Enable Dedupe Metadata"
unchecked.

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