[zfs-discuss] Does a mirror increase read performance

2008-02-28 Thread Jonathan Loran
Quick question: If I create a ZFS mirrored pool, will the read performance get a boost? In other words, will the data/parity be read round robin between the disks, or do both mirrored sets of data and parity get read off of both disks? The latter case would have a CPU expense, so I would

Re: [zfs-discuss] Does a mirror increase read performance

2008-02-28 Thread ian
Jonathan Loran writes: Quick question: If I create a ZFS mirrored pool, will the read performance get a boost? Yes. I use a stripe of mirrors to get better read and write performance. Ian. ___ zfs-discuss mailing list

Re: [zfs-discuss] Does a mirror increase read performance

2008-02-28 Thread Roch Bourbonnais
Le 28 févr. 08 à 20:14, Jonathan Loran a écrit : Quick question: If I create a ZFS mirrored pool, will the read performance get a boost? In other words, will the data/parity be read round robin between the disks, or do both mirrored sets of data and parity get read off of both

Re: [zfs-discuss] Does a mirror increase read performance

2008-02-28 Thread Jonathan Loran
Roch Bourbonnais wrote: Le 28 févr. 08 à 20:14, Jonathan Loran a écrit : Quick question: If I create a ZFS mirrored pool, will the read performance get a boost? In other words, will the data/parity be read round robin between the disks, or do both mirrored sets of data and parity get

Re: [zfs-discuss] Does a mirror increase read performance

2008-02-28 Thread Roch Bourbonnais
Le 28 févr. 08 à 21:00, Jonathan Loran a écrit : Roch Bourbonnais wrote: Le 28 févr. 08 à 20:14, Jonathan Loran a écrit : Quick question: If I create a ZFS mirrored pool, will the read performance get a boost? In other words, will the data/parity be read round robin between the

Re: [zfs-discuss] Does a mirror increase read performance

2008-02-28 Thread Jonathan Loran
Roch Bourbonnais wrote: Le 28 févr. 08 à 21:00, Jonathan Loran a écrit : Roch Bourbonnais wrote: Le 28 févr. 08 à 20:14, Jonathan Loran a écrit : Quick question: If I create a ZFS mirrored pool, will the read performance get a boost? In other words, will the data/parity be read