If you work with filesystems, I suggest to put dsync option on.
At device creation time:
disk init name='newdev', physname='/sybase/data/newdev.dat', size='10g', dsync = true
Or you can do that after device creation with sp_deviceattr system stored procedure:
sp_deviceattr newdev, dsync, true
Unfortunately,after using sp_deviceattr to change the dsync setting, you must reboot Adaptive Server before the change takes affect.
This is option is meaningful with filesystems indeed writes to the database device occur directly to the physical storage media, and Adaptive Server can recover data on the device in the event of a system failure.
This could help you to avoid some issues in case of disaster (like violent server crash etc...)