[rsyslog] reliability of SSD disks?

[Jeff Moyer]

david at lang.hm writes:

> On Wed, 19 Aug 2009, Rainer Gerhards wrote:
>
>> Hi all,
>>
>> quick question to those in the know: are SSD disks considered reliable from
>> an auditing (or near audit-grade) point of few? Thank to a hard disk failure,
>> I finally got such a disk in my workstation and the performance improvement
>> is obviously very good and creates quite a different view about the volume
>> that rsyslog can do with "disk" queues.
>
> they are far more reliable than normal drives, but you would still want to 
> have a mirrored pair for true audit-grade purposes. they do wear out over 
> time (although that time is expected to be several years worth of 
> continuous write activity)
>
> that being said, for my normal systems I am now buying a single SSD where 
> before I purchased a mirrored pair of high-speed SCSI/SAS drives

I find these claims of reliability surprising, if only due to the lack
of soak time for such drives.  There is also no mention of the class of
device.  Are we talking about consumer grade MLC?  SLC?  Are some
vendors' devices better than others?  Not all SSDs are created equal.

Cheers,
Jeff