Storage

TNAS can install 2.5 inch SATA hard drive, 3.5inch desktop SATA hard drive or 2.5 inch SSD. Since TNAS is kind of storage device that needs to work long hours, even work for 24 hours a day and seven days per week, so not all kinds of hard drives are suitable for TNAS because of high demand on hard drive, it is recommended to use dedicated NAS hard drive. Please visit the official website of TerraMaster to read the contents of Hard drive Compatibility to select a proper hard drive for TNAS.

For the security of your data, please change the hard disk immediately.

Some models do, some don't, check the official spec sheet before you buy. For models that can upgrade RAM, 2GB can be upgraded to 4GB and 4GB can be upgraded to 8GB, but you must use the memory stick provided by TerraMaster, otherwise the system may not boot properly.

It's wrong to install TOS system separately for each hard drive. If you want to add a new hard drive, please insert it into the device when the device is powered on, and then go to TOS control panel > Storage Manager >RAID, and click Create, it could be used after RAID is created. TOS system will be installed to the new hard drive automatically. It will lead to RAID rename when installing TOS system separately for each hard drive, and only one hard drive's data could be shown with all hard drives inserted . In this case, please do the following steps:
1. Backup data: power off the device, insert any one of the hard drive and power the device on to backup the data
2. Delete the RAID: go to TOS Control Panel>Storage Manager > RAID, select RAID Volume #1 and click Delete
3. Create RAID: power the device off, and insert all the hard drives, then power it on, and go to TOS Control Panel>Storage Manager > RAID, and click Create. It will work properly after the RAID is created.

Raid 0: the storage capacity is the capacity of N* minimum hard drive space (N is the number of hard drives, which is not less than 2).
Raid 1: storage capacity is the capacity of minimum hard drive space (N is the number of hard drives, which is not less than 2).
Raid 3: storage capacity is the capacity of (N-1)* minimum hard drive space (N is the number of hard drives, which is not less than 3).
Raid 5: storage capacity is the capacity of (N-1)* minimum hard drive space (N is the number of hard drives, which is not less than 3).
Raid 6: storage capacity is the capacity of (N-2)* minimum hard drive space (N is the number of hard drives, which is not less than 4).
Raid 10: storage capacity is the capacity of (N/2)* minimum hard drive space (N is the number of hard drives, which is equal to 4).
SINGLE Disk: the capacity of each hard drive is separate (N is the number of hard drives).
JBOD: the storage capacity of easily bundled hard drives is the sum of the capacity of all hard drives.

SINGLE Disk: Each hard drive is separate and they display separately in the computer without any correlation between each other.
JBOD: All hard drives are combined into a linear disk (just a bunch of disks), and one disk space is displayed in the computer.

The D5-300C has the RAID controller to control the RAID for HDD’s in tray 1 and 2. If these two HDD’s were created RAID by 3rd party software, the RAID controller would be incompatible with the one D5-300C already has. And as there is no RAID controller for the HDD’s in tray 3, 4 and 5, these three HDD’s are supported to use 3rd party software to create RAID.

The source of the problem is the selection of the MBR partition for initialising the hard drive, as this can support a capacity no greater than 2TB. The GPT partition should be selected for hard drives larger than 2TB.

1. The RAID Manager should be downloaded and installed on the computer from the TerraMaster official website;
2. D5-300 should be connected to the computer and started up;
3. The RAID Manager should be run on the computer, deleting the current RAID of D5-300 and creating a new RAID 5;
4. Following creation of RAID, the computer's "disk management" will show an unallocated new disk, which should be initialised and formatted to enable its use (see the instruction manual for Mac computer initialisation)

The answer is no, because the D5-300 storage device is exclusively meant for RAID 5, meaning that it is possible to creat just one set. RAID failure may occur if multiple RAID sets are created, leading to loss of hard drive data. Current arrays must be deleted before creating new ones, if hard drives need to be added or removed from the current RAID. Data should be backed-up prior to array deletion as this may cause hard drive data to be lost.

Yes. Common SATA SSDs are eligible for use.

No. TNAS is a networked storage device that cannot transmit data directly to a computer via a USB interface. You need to transfer data over a network. The USB interface of TNAS is used only for external USB storage devices. 

No, you can't. The hard disk newly added in the TNAS will be reformatted. Please back up the data in advance.

The file formats for USB external storage devices can be FAT 32, NTFS, EXT 3, EXT 4.

Yes.

TNAS storage space is rendered as shared folder, not as drive, so you can't see multiple hard drives at the same time in Windows File Browser. 

No, it can't be used! All hard drives inserted into TNAS will be reformatted to EXT 4 or Btrfs format.

Since the TNAS motherboard is hidden inside the chassis, when you want to add a memory stick, you need to unscrew the chassis with a screwdriver to open it, install the memory stick into the slot and close the chassis. When installing the memory stick, make sure that the memory stick is installed in place, otherwise the system will not boot.

Please make sure that you are using the RAM stick provided by the official TerraMaster, or the system may not boot. Also, please make sure that the RAM stick is correct and fully seated in the slot.

Yes.

Currently supports a maximum of 12TB and will remain updated, please keep an eye on official information.

Yes. You can create a JBOD array using four 8TB hard drives.

Yes.

Yes.

Yes. You can do this by extending the array without affecting the data.

Only some of the high-end rack-mount models can upgrade the CPU. Please check the specifications on the official website before you buy. 

Yes.

TNAS does not supports M.2 SSD.