[GH-ISSUE #558] Can't add M.2 SSD disk to a storage pool for storage expansion #705

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opened 2026-03-11 13:14:48 +03:00 by kerem · 3 comments

kerem commented

2026-03-11 13:14:48 +03:00

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Originally created by @rfpg1 on GitHub (Feb 6, 2026).
Original GitHub issue: https://github.com/007revad/Synology_HDD_db/issues/558

Hello,

I've a Synology 1821+

I run the script sudo -s Synology_HDD_db-main/syno_hdd_db.sh -nr as described in the documentation and the file ds1821+_host_v7.db contains my disks as compatible:

"WD Red SN700 4000GB":{"11C120WD":{"compatibility_interval":[{"compatibility":"support","not_yet_rolling_status":"support","fw_dsm_update_status_notify":false,"barebone_installable":true,"barebone_installable_v2":"auto","smart_test_ignore":false,"smart_attr_ignore":false}]},"default":{"size_gb":4000,"compatibility_interval":[{"compatibility":"support","not_yet_rolling_status":"support","fw_dsm_update_status_notify":false,"barebone_installable":true,"barebone_installable_v2":"auto","smart_test_ignore":false,"smart_attr_ignore":false}

However, when I try to add the disk for storage expansion to a current storage pool I still get the message:

"Cannot perform this action. No drives are available or meet the requirements. View drive requirements"

DSM version: 7.3.2-86009

Any idea on how to fix?

Thanks in advance!

Edit: also tried running this script: https://github.com/007revad/Synology_enable_M2_volume but same error

Edit2: I'm able to create a new storage pool with the M.2 drivers which I was not able to do before running Synology_enable_M2_volume but I'm not able to join a M.2 drive in a pool already created, is there a way to do this? The current pool I want to add is SSD only (WD RED SA500 2.5 4TB) and the M.2 I want to add (WD RED SN700 4TB)

Originally created by @rfpg1 on GitHub (Feb 6, 2026). Original GitHub issue: https://github.com/007revad/Synology_HDD_db/issues/558 Hello, I've a Synology 1821+ I run the script sudo -s Synology_HDD_db-main/syno_hdd_db.sh -nr as described in the documentation and the file ds1821+_host_v7.db contains my disks as compatible: "WD Red SN700 4000GB":{"11C120WD":{"compatibility_interval":[{"compatibility":"support","not_yet_rolling_status":"support","fw_dsm_update_status_notify":false,"barebone_installable":true,"barebone_installable_v2":"auto","smart_test_ignore":false,"smart_attr_ignore":false}]},"default":{"size_gb":4000,"compatibility_interval":[{"compatibility":"support","not_yet_rolling_status":"support","fw_dsm_update_status_notify":false,"barebone_installable":true,"barebone_installable_v2":"auto","smart_test_ignore":false,"smart_attr_ignore":false} However, when I try to add the disk for storage expansion to a current storage pool I still get the message: "Cannot perform this action. No drives are available or meet the requirements. View drive requirements" DSM version: 7.3.2-86009 Any idea on how to fix? Thanks in advance! Edit: also tried running this script: https://github.com/007revad/Synology_enable_M2_volume but same error Edit2: I'm able to create a new storage pool with the M.2 drivers which I was not able to do before running Synology_enable_M2_volume but I'm not able to join a M.2 drive in a pool already created, is there a way to do this? The current pool I want to add is SSD only (WD RED SA500 2.5 4TB) and the M.2 I want to add (WD RED SN700 4TB)

kerem commented

2026-03-11 13:14:54 +03:00

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@007revad commented on GitHub (Feb 6, 2026):

You can mix drive types in the same storage pool. HDD, SATA SSD and NVMe each need to be in their own storage pool. So a 2.5 inch SATA SSD and a NVMe cannot be in the same storage pool

@007revad commented on GitHub (Feb 6, 2026): You can mix drive types in the same storage pool. HDD, SATA SSD and NVMe each need to be in their own storage pool. So a 2.5 inch SATA SSD and a NVMe cannot be in the same storage pool

kerem commented

2026-03-11 13:14:59 +03:00

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@rfpg1 commented on GitHub (Feb 6, 2026):

They are all SSD but 5 of them are SATA and 2 are M.2

Can't I mix them?

@rfpg1 commented on GitHub (Feb 6, 2026): They are all SSD but 5 of them are SATA and 2 are M.2 Can't I mix them?

kerem commented

2026-03-11 13:15:04 +03:00

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@007revad commented on GitHub (Feb 6, 2026):

Storage Manager won't let you mix them.

I notice that Synology's own documentation does not distinguish between SATA SSD and NVMe but it may have been written before Synology allowed NVMe volumes. I've informed Synology that they need to update that document.

Currently it only says

Mixed drive types as shown below are not supported:

HDDs and SSDs

SATA and SAS drives

4K native and non-4K native drives

@007revad commented on GitHub (Feb 6, 2026): Storage Manager won't let you mix them. I notice that Synology's own documentation does not distinguish between SATA SSD and NVMe but it may have been written before Synology allowed NVMe volumes. I've informed Synology that they need to update that document. Currently it only says > Mixed drive types as shown below are not supported: > - HDDs and SSDs > - SATA and SAS drives > - 4K native and non-4K native drives