dullah wrote:i am laughing hard and won my bets.
SSD cache with RAID1 SATA HDD's is not SSD storage.
Omnipotent wrote:dullah wrote:i am laughing hard and won my bets.
SSD cache with RAID1 SATA HDD's is not SSD storage.
I was afraid of this myself. When using RAID you're usually better off using the exact same disk type, and you should almost never mix SSD's with HDD's in the same RAID array. There are some reasons why a hybrid configuration may be nice, but the speed loss from the HDD's makes the use of SSD's almost worthless.
"You really don't want to RAID an SSD and HDD. You're limited to the speed of the slowest, with the size of the smallest." (Source)
"The writes and maximum volume size will be capped at the smallest/slowest disk like any other mixed RAID. The advantage is that reads are all from the SSD, which is where it really excels. It allows for the redundancy of RAID-1 and read-performance of a SSD without the cost of two SSDs.
Sure there is a write penalty, but for most home users they are read-heavy not write-heavy." (Source)
"Points to remember for a RAID 1:
The SLOWER of the drives... will dictate the overall speed.
The SMALLER of the drives... will dictate the overall size." (Source)
dullah wrote:- Always use a good RAID adapter, PERC H730P or 740P on modern DELL servers for example, do not go with RAID software.
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