28 Jan
2021
28 Jan
'21
09:02
On Thu, Jan 28, 2021 at 10:40 AM Per Jessen <per@computer.org> wrote:
The built-in cache on the disk drive is for speeding up reads, not writes.
And begs the question about who backs up the hard disk buffer memory.
It is not used for write caching.
It is. Unless HDD has internal non-volatile backup (some have) it should really be disabled, and this is normally default when used with RAID controllers - except some vendors lie and retain write cache. Good for benchmarks ...