Fresh installation Truenas on a Raid1 2disk array, cannot see that disk to create pool

TrueNAS General
1

I am a Truenas newby using a Dell PowerEdge 1950. It takes 2 x 3.5 2Tb disks which I inserted and created a Raid1. Then I installed TrueNAS-13.0-U6.4. on the Raid. I tried to create a Pool but I cannot see the disk in the setup screen.Storage/Pools page. I can see the disk in the Disks item.

Is this because I installed the system on the raid mad by the Dell?

2

Yeah, you want JBOD, not hardware RAID, so you can let TrueNAS do software RAID. The hardware RAID makes your two disks look like one disk and TrueNAS can’t do anything with just one disk.

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you need at least 2 disk - 1 whole disk for truenas and the other disk for storage. DO NOT use hardware raid with truenas

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Adding to that, relying on that hardware raid card means that the moment you need to move your drives to a different system, due to some kind of hardware failure for example, you likely need an identical or at least similar hardware raid card in the receving server in order to be able to read the raid.

Software raid with ZFS will be much less picky in terms of hardware.

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Thanks not NotHatless. That is very helpful and simply stated. I suspected this.

Tah V much and take care

6

Thanks all. Great help much appreciated

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And just to be clear: hardware RAID is one problem (it’s never a good idea with TrueNAS or anything else that uses ZFS), but the other is that TrueNAS demands a dedicated boot device. Always has, probably always will. The installer tells you this, as does the product documentation.

Install TrueNAS onto a dedicated boot device (a small–30-60 GB–SSD is ideal), or mirrored pair of boot devices if desired (TrueNAS will create the mirror itself), and give it whatever other drives you want for storage.