On 06/09/11 2:24 AM, Emmanuel Noobadmin wrote: > Alternatively, if I mdraid mirror the existing disk, would md be smart > enough to read using the other disk while the first's tied up with the > first process? that woudl be my first choice, and yes, queued read IO could be satisfied by either mirror, hence they'd have double the read performance. next step would be a raid 1+0 with yet more disks. -- john r pierce N 37, W 122 santa cruz ca mid-left coast