You can power on your Synology NAS after installing drives.¹ However, your Synology NAS cannot enter Ready status when you locate the device via Synology Assistant.²

• Synology NAS models with 2 or more drive bays

The system startup process involves checking through the system partition on each installed drive. The system will not be able to enter Ready status if there are any detected abnormalities. To resolve the issue, identify the problematic drives and try to use the remaining drives to power on the system.

Follow the instructions below that apply to your scenario:

DSM 7.0 and above

To find out whether your Synology NAS supports hot-swapping drives, check its Datasheet.

For models that support hot-swapping drives

For models that do not support hot-swapping drives

DSM 6.2 and below

1. Power off your Synology NAS.
2. Remove all the drives from your Synology NAS.
3. Select one of the drives and insert it in the slot corresponding to Drive 1.¹
4. Power on your Synology NAS and check its Power LED indicator.² The LED indicator should change to a static blue or green color within 10 minutes.
5. Launch Synology Assistant to check the device status of your Synology NAS.³ Your Synology NAS should be in Ready status.
6. Long press the power button on your Synology NAS to shut it down.
7. Repeat steps 2 through 6 with each drive. Take note of the drives that do not allow your Synology NAS to power on and enter Ready status.
   • If the number of unsuccessful drives is less than or equal to the number of drive failures that can be tolerated by the RAID type of your storage pool, do the following and proceed to step 8:
     1. Install all the other successful drives back.
     2. Power on your Synology NAS.
     3. Launch Synology Assistant to check that your Synology NAS has entered Ready status.
   • If your Synology NAS still cannot enter Ready status or if the number of unsuccessful drives is more than the number of drive failures that can be tolerated by the RAID type of your storage pool, consider using a spare drive.
     For detailed instructions, refer to the Recover your data > For multi-bay models section of this article.
8. Go to DSM > Storage Manager > Storage Pool to check the status of your storage pool and drives:
   • If any of the drives are no longer in a healthy status, do the following:
     1. Back up your data.
     2. Remove the storage pool.
     3. Create a new storage pool using only healthy drives.
     4. Restore the backed-up data to the newly created storage pool.
   • If all the drives are in a healthy status, insert new drives to repair your storage pool (which should be in a Degraded status).