7 x 1 TB SSD and HDD mix Truenas used Plex 4K Server vdev suggestion!

[cryplander]

• Motherboard make and model: MSI AEGIS All in one PC planned to be used as Plex 4K Server Truenas
• CPU make and model: Intel i7-6700K
• RAM quantity: 32 GB DDR4 2133 SODIMM
• Hard drives:

- Boot: 2x 256 GB Samsung 950 pro nvme 256 gb
- Hard drives: 3 x Marshall 8TB 7200 rpm 128 mb cache, 1 x WD White 18 TB
- SSD: 6 x Hikvision 1 TB SSD, 1 x SANDISK SSD PLUS 1 TB

• Hard disk controllers: 2 x LSI HBA 9211-8i (LSI00194) flashed to IT mode
• Network cards: 2 x Asus XG-C100C one for Main PC and one for Truenas Plex Server
• Internet connection: 100 mbit FIber will be upgraded to 1gbit fiber.
• Switch: QNAP QSW-2104-2S 2 Port 10GbE SFP + 5 Port 2.5gbe

Hello to all. I am new to the forum and new to Truenas.

I am planning on using this PC up as a plex server for 4K movies connected to my main PC which i plan to watch the movies on a 4 K projector.

My question is about vdevs and pool.

Should i create two different pools with

First option:
1stpool: 6 x 1 TB Hikvision SSD, 1 x Sandisk 1 TB SSD mirror vdev

2ndpool: 3 x TB Marshal HDD + 1 x 18 TB WD WHite HDD mirror vdev

or

Second option:
1stpool:
4 x 1 TB Hikvision SSD mirror vdev
2 x 1 TB Hikvision SSD+ 1 x 1 TB Sandisk SSD mirror vdev

2nd pool:
2ndpool: 3 x TB Marshal HDD + 1 x 18 TB WD White HDD mirror vdev

Which option should is use?
Any suggestions for better options?
if i were to add more hdd and ssd, what should i add like one more 1 gb SSD, or one more 8 TB HDD or another 18 TB WD White for this setup?

Thanks :)

 

[Arwen]

The 18TB disk is not matched in size to the other pool members, which are 8TB. Just understand that the extra 10TB will not be usable until it's mirror partner disk is upgraded.

Odd numbered storage devices for 2 way mirrors does not work. Not sure what you plan on having 7 SSDs.

In general, movie storage wants density not speed, so the hard drives should be fine.

What is the purpose of the SSDs?

 

[cryplander]

The 18TB disk is not matched in size to the other pool members, which are 8TB. Just understand that the extra 10TB will not be usable until it's mirror partner disk is upgraded.

Odd numbered storage devices for 2 way mirrors does not work. Not sure what you plan on having 7 SSDs.

In general, movie storage wants density not speed, so the hard drives should be fine.

What is the purpose of the SSDs?

So for the 18 tb to be in good use i need another 18 tb for mirror right?

The SSDs are already owned from other rigs and i want to use them if possible

 

[Arwen]

So for the 18 tb to be in good use i need another 18 tb for mirror right?
...

Yes.

You can mirror the 18TB to a smaller disk, and then when a 18TB or larger is available, you can replace the smaller one with the new, larger one. Then, that vDev will grow to 18TB.