[mythtv-users] Mirroring root partition on SSD to a hard drive -- bad idea?

[Russell Gower]

On 14 Jan 2016, at 19:27, Eric Ladner <eric.ladner at gmail.com> wrote:

> Mirroring with one side on an SSD and the other on a regular HD will reduce your write performance significantly (and possibly read performance if some percentage of reads are forwarded to the HD).
> 
You can largely mitigate against that by specifying —write-mostly and —write-behind for the rotating disk when building the array with mdadm. That will require a write intent bitmap and i’m not sure that it’s a good idea to have that on the SSD as it will be written to a LOT.

Regards
  Russell