Comment by ndsipa_pomu
2 years ago
> No DB systems have raw access to sectors or direct raw access to files.
Oracle can use raw disks without having a filesystem on them, though it's more common to use ASM (Automatic Storage Management) which is Oracle's alternative to raw or OS managed disks.
Oh nooo, I forgot, there are real databases existing in the wild, too ... :)
https://docs.oracle.com/en/database/oracle/oracle-database/1...
Indeed. Offers 10-12 percent performance writing direct on a block device. But, this block device is still attached to a running system :)
MySQL also supported this a million years ago, I'm not sure if it still does