How to replace a disk in SynetoOS 4

Written By Christian Castagna (Administrator)

Updated at May 22nd, 2025

→ Applies to: SynetoOS 4.x

This article summarizes the steps to perform a correct disk replacement on SynetoOS 4.

IMPORTANT

It is essential that every Syneto appliance owner understands the information contained herein, with the aim of operating autonomously and safely on their systems and speeding up replacement operations.

 

Prerequisites

Ensure the following prerequisites are met before starting:

1 RMA request
A new RMA request has been opened through Syneto Customer Support (you have a ticket number).
2 New disk received
The new disk has been physically received via courier.
3 Screwdriver (optional)
For Support plans without on-site hardware support, a Phillips screwdriver will be needed to remove and reattach the disc trays.

 

Replacement via GUI


Step 1. Login to SynetoOS GUI

https://<your_ip_address_or_hostname>

 

Step 2. Click on the gear icon located in the top right-hand corner, then select drivers

 

Step 3. Click on Map

 

Step 4. Click on the disk highlighted in yellow

NOTE

In some cases, the Position highlighted in yellow color may not be available.
In these cases, identify the disk shown in gray color and use the Blink LED functionality (Step 5) to ensure you have chosen the correct disk.

 

After clicking on the disk to be replaced, additional information will appear on the right side.
Take note of its Position.

 

Step 5. Click on Blink LED to confirm the position of the disk

Locate the disk in the correct position on the server by identifying the bay with the flashing light.

 

Step 6. Click Stop blinking to turn off the flashing light on the disk

 

Step 7. Physically replace the disk

Replace the disk with the new one, ensuring it's inserted in the Position specified in Step 4.

To remove the disk, it's necessary to detach the trays from the old disk and mount them onto the new one.

The old disk will appear like this in the web interface

 

Step 8. Find new disk in the web interface

Click the Refresh button until the new disk appears

 

Step 9. Select the old disk (see Step 5), then click on Replace (top-right)

 

Step 10. Select the new disk and click on Replace

Wait for the operation to complete

 

Replacement via CLI


Step 1. Connect to SynetoOS appliance via SSH as admin

ssh admin@<your_ip_address_or_hostname>

 

Step 2 (optional). Change into Solaris shell (in case you're directed to an unsupported shell)

un sh

 

Step 3. Get root privileges

sudo su -

 

Step 4. List all pools and statuses

zpool status

 

Step 5. Retrieve all disks available and information

config disk show

 

Step 6. Replace the disk with a new one (replace <pool_name>, <old_disk> and <new_disk> with the correct information)

 
zpool attach <pool_name> <old_disk> <new_disk>

EXAMPLE

zpool attach hybrid c0t5000C50099FF4507d0 c0t5000C500C2536A77d0
  • hybrid (<pool_name>)
  • c0t5000C50099FF4507d0 (<old_disk>)
  • c0t5000C500C2536A77d0 (<new_disk>)

In case of output error, you can try running the same command adding the “-f” parameter:

  • -f: forces the use of the <new_disk> even if in use
zpool attach -f hybrid c0t5000C50099FF4507d0 c0t5000C500C2536A77d0

 

Resilvering Status


Check resilvering status ("How to monitor resilvering status in SynetoOS 4").

 

Return of replaced disc (optional)


Return is necessary

In the event that it is necessary to return the replaced disk (i.e. in the case of a disk still under warranty or hardware intervention carried out without an on-site Syneto technician), it will be necessary to proceed with the shipment of the disk.

The process will be completely managed by the Syneto Delivery team, through the support ticket, which will agree directly with the customer to schedule the collection of the disk through a courier. After the collection of the replaced disk by the courier, the support ticket will be closed.


Return is not necessary

In case there is no disk to return, the support ticket may be closed right after Syneto Customer Support has verified that the new disk has been shipped and the replacement instructions (this article) have been correctly shared. In case of further issues, the customer will be able to reopen the same ticket to request new assistance.