On Wed, 22 Apr 2009, bsousa wrote:
* the ssd drive will only help in write I/O's ? i ask this because we will need to backup this data to another host running solaris attached with fibre to a tape library. our current setup takes around 10 hours for a full backup (!!), and my intention is to decrease this backup time window
The SSD will primarily help with synchronous write I/Os. It is possible for SSDs to help with read I/Os but only if they are large, and not for bulk transfers like backups.
* will the atime defined as off will help to maximize performance ?
Zfs is lazy about updating it so it does not seem to make much difference.
* is there any rule of thumb to setup the recordsize, or any real word experience ,something like ZFS in the Trenches ? ;)
Use the default recordsize unless you are using something like a database which is known to use smaller fixed-sized blocks, or doing many updates to the insides of existing files (unusual other than a database).
Bob -- Bob Friesenhahn [email protected], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer, http://www.GraphicsMagick.org/ _______________________________________________ storage-discuss mailing list [email protected] http://mail.opensolaris.org/mailman/listinfo/storage-discuss
