Martin Cracauer via plug on 3 Jan 2022 11:17:03 -0800

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Re: [PLUG] Moving mdadm RAID-5 to a new PC

Adam Zion via plug wrote on Mon, Jan 03, 2022 at 10:30:24AM -0500: 
> Long story short: I have recently set up a home NAS on a Raspberry Pi 2 via
> mdadm. It works splendidly, if slowly. Hence wondering if it'd make sense
> to migrate it to a faster Pi. Has anyone done this before? Or would I be
> better off leaving the RAID where it is and moving all other services- like
> the streaming media server or Pi-hole ad blocker- onto another host?

The Raspberry Pi compute module 4 has a PCIe x1 slot.  You could run a
SATA multiport controller with that.  Or a stronger USB
multi-controller card.

As a general note, if you leave the raid on the very slow I/O I am
concerned about array rebuild time if you ever have to replace a
disk.  How long does a scrub take you?

Martin Cracauer <>
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