I'm planning to build two MySQL DB servers that synchronized by DRBD 9.0 with RHEL 7.3. I want to enable checksum-based synchronization by adding "csums-alg <algorithm>" to drbd.conf. After I read user's guide [5.11. Configuring checksum-based synchronization], I had a simple question.
The user's guide said : "<algorithm> may be any message digest algorithm supported by the kernel crypto API in your system’s kernel configuration. Normally, you should be able to choose at least from sha1, md5, and crc32c." My question is , Is there recommendation algorithm for DB server? The algorithms (sha1, md5, crs32) are king of old ones. Can I use sha256? Is there some reason that sha256 is not used? Please give me any adovices. Thanks,
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