[CentOS] Suggest Hardware Raid Controller Card

Tue Jul 12 12:21:51 UTC 2011
Christopher Chan <christopher.chan at bradbury.edu.hk>

On Tuesday, July 12, 2011 04:27 PM, Ljubomir Ljubojevic wrote:
> John R Pierce wrote:
>> On 07/11/11 6:10 PM, Christopher Chan wrote:
>>> Wait, wait. So using SSDs as FAST writing disks is a load of hogwash? You
>>> still need stuff like umem nvram cards? What's the deal with things like
>>> Fusion IO then?
>>
>> the high end enterprise SSDs have supercaps to give them time to flush
>> their write buffers to flash in case of power failure events.
>>
>> but these drives are way more expensive than the $200 120GB stuff you'll
>> find in the whitebox market.
>>
>> the whitebox stuff has fast writes because they buffer them, but in case
>> of power failure with pending write operations, all bets are off on your
>> data integrity.
>>
>>
>>
> If I understood correctly, SSD's, even whitebox are good to place ext3/4
> journaling files on keeping ext3/4 partitions on HDD's. Right? I would
> appreciate real-case scenario advice for cheaper drives, for home and
> small business applications. Thanks
>

Depends on the flash chips used. SLC flash is safer than MLC flash...but 
by how much I do not know.