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3 tb drive install


fas77

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I've been running unraid for many years now.

I'm currently running 4.7.

My drives are currently a bunch of 2tb, 1.5tb, and 1tb's.

I bought a seagate 3tb drive and started to rearrange my

drives so it could be my new parity drive.

As of right now I have my existing drives assigned where I want them.

I have the array running without the 3tb assigned yet. (no parity disk currently)

Everything is valid and is up and running.

I'm ready to assign the 3tb to my array but it appears I need to be running at least

5.0beta7 for the 3tb support.

In the upgrade instructions it says not to upgrade from 4.7 unless you have a valid

parity drive running.

 

Can I upgrade from 4.7 to current 5.0beta without a parity drive installed?

 

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I would want someone else to comment on this....

 

but i think what it means is that don't do an upgrade while your parity isn't valid (if you have it), not that you are required to have a parity drive to do the upgrade.

Basically, that's what was intended.  If your parity is installed, and you have a disk that has failed, the upgrade just complicates things. 

 

At least review your system log for disk errors before you upgrade.  You do not need a parity disk for the upgrade.

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Thanks guys!

 

I figured that was the case, I just wanted to be sure.

My logs show no errors and everything looks good.

I will do the software update tonight.

If everything looks good I will install the 3 tb parity and start

the parity ckeck.

 

Also on my current 4.7 the Default Partition Format is set to MBR: Unaligned.

I never changed this, that is what it was set as default.

When I install the 3tb drive what should this setting be?

 

 

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Also on my current 4.7 the Default Partition Format is set to MBR: Unaligned.

I never changed this, that is what it was set as default.

When I install the 3tb drive what should this setting be?

After you upgrade, set the default to MBR:Aligned.  It has no effect on existing drives, and has no meaning on drives > 2.2TB  It will only have any meaning if you subsequently add a new drive that is < 2.2TB in size that does not already have a partition defined.

 

In other words, all 3TB drives have a completely different partitioning scheme which is always aligned on a 4k boundary.  The MBR:Alligned/Not-alligned is not used when partitioning a 3TB drive.

The MBR on 3TB drives will have a placeholder "partition" starting on sector 1. (not really used, but there to make older utilities happy)

 

Joe L.

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