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Which disk is TOS installed on?

Posted: 06 Nov 2024, 16:22
by EthanLiu
Applicable models: All TNAS models
Applicable versions: TOS 5 / TOS 6

During or after the installation of the system, you may need to determine which disk the system is installed on. Below is a detailed guide for TOS 5 and TOS 6 versions:

1. TOS 5 Version
In TOS 5, all selected disks for installation are treated as system disks. Therefore, during the installation process, the initialization program automatically configures all selected disks as system disks. As a result, TOS 5 considers them as system disks and stores system data on them.

2. TOS 6 Version
TOS 6 supports up to two disks as system disks by default. Here are the steps to determine the system disk:

①. System disk selection during installation
Automatic Initialization: If you choose automatic initialization to install TOS 6, the system will automatically select the first two disks (e.g., HDD 1 and HDD 2) as system disks, based on the disk slot order.
Custom Initialization: If you choose custom initialization, the system will list all inserted disks, allowing you to manually select two disks as the system disks.

②. Confirming the system disk after installation
If TOS 6 has already been installed, you can confirm which disk is configured as the system disk by following these steps:
  • Go to TOS > Control Panel > Storage Management > Disk page.
  • On this page, you can view detailed information for all disks. The system disk is typically marked with a "System Disk" label.
  • Based on the label on the disk, you can easily identify the current system disk.

Re: Which disk is TOS installed on?

Posted: 24 Jul 2025, 04:59
by LordP
I've read a ton of stuff in this forum, and I'm still not 100% sure what to do.

I just got my F4-423 today, and I'm adding two 4TB M2 SSDs - and I'm hoping to install TOS on one and use the second as a cache.

Is that permissible? Are there instructions?

I'll also have 32GB of RAM if that makes a difference.

Thank you.

Re: Which disk is TOS installed on?

Posted: 24 Jul 2025, 18:09
by TMzethar
LordP wrote: 24 Jul 2025, 04:59
Since it is uncertain whether your guidance system will install TOS5 or TOS6, please follow the following secure operation steps:
First, install one SSD into F4-423 and then start the NAS to initialize TOS.
After installation is complete, turn off the NAS, install the other SSD and HDDs into F4-423, and start again.
Then, you can configure the other SSD as Hyper Cache.