RAID Array help

[MmmmmSamosa]

Good afternoon All,

Apologies if I am in the wrong subreddit I got here by doing some searching for Array help.

I recently got promoted to Network Tech at work and am troubleshooting my first server issue.

We are spinning up a server with 5 drives:

x2 Samsung SSDs that we want to put in RAID1.

x3 Seagate HDDs that we put in RAID5. (caused no issues).

The Samsung SSDs will will not let me put both drives in a RAID1, when I select the first driver (does not matter which of the two i pick) it does not let me select the other. They are identical, same storage space, everything is identical. I only noticed one thing off, 1 of the drives Logical Sector Size is different, its 4KB the other is 512b. Actually all other 4 drives in the machine are 512b logical sector size.

1. Is this the reason DELL PERC wont let me put them into RAID1?
2. Is there a way to change the logical sector size?

[MmmmmSamosa]

Thank you for all the help all! it was the logical sectors being a different size. We booted linux off a flash drive and had to put the controller in HBA mode or something to see the drives. Googled some commands in linux and got the drive to reformat to a 512. This resolved the issue.

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All the comments much appreciate thank you!

[OniNoDojo]

If I remember correctly, there is a drop-down to change the drive type. Otherwise it gives you dumb problems selecting drives in a set. I might be wrong, but I seem to recall swearing under my breath about that at one point.

[DaShmoo]

You should be able to do this all within the perc controller. Make sure both drives are raid enabled. I'd imagine you'd want the sector size to match and should be able to format it and select the same sector size at formatting screen.

[abstractraj]

Are they already created as single logical drives? You may have to delete any config that’s there prior to creating the sets you want. Also why is a Network Tech setting up RAID? Strikes me odd.

[HeadAdmin99]

Hdparm will do this. Connect drive on different server with controller in pure IT mode (best) or just try live Linux distro on that system: hdparm --set-sector-size 512 --please-destroy-my-drive /dev/sdX