--data-checksums Use checksums on data pages to help detect corruption by the I/O system that would otherwise be silent. Enabling checksums may incur a noticeable performance penalty. This option can only be set during initialization, and cannot be changed later. If set, checksums are calculated for all objects, in all databases. ==== If I understand it correctly, the performance penalty is when the blocks are written to the disk by the background writer and/or during checkpoint. Given that the process is async and application does not wait on it, is the performance penalty really a big concern. thanks
