[pve-devel] ceph firefly in pve repos

[Stefan Priebe - Profihost AG]

Am 11.09.2014 um 12:21 schrieb Dietmar Maurer:
>>> I thought that would be handled by the SSD drive internally? If there
>>> is a capicitor, the SSD can acknowledge the write immediately (write back
>> cache)?
>>
>> Some do and some do not. It depends on the firmware and the drive.
>>
>> For example the intel 520 drives ignored the command even they do NOT have a
>> capicitor.
>>
>> Intel S3700 do not ignore the command but they have a capicitor.
> 
> I am unable to understand that :-/

Some SSDs regardless if they have or don't have a capicitor ignore the
FLUSH commands and other do not. This depends on the SSD itself not on
the manufactor.

Greets,
Stefan