On 17-03-2014 16:21, Mister Vlad wrote:
I am looking at building a dedicated MySQL server... was wondering about the 
downside to using SSD drives?
My thoughts was going 2 servers, with 4 drives each in raid 5 (3+1) 
configuration.
Is this a good idea?   I was originally thinking about going Raid5(3+1) and 
Raid 1 (Mirrored) but that might a little overkill?
Now, for the CPU, is a single 8core sufficient?   what about Ram?   16gb?  32gb?
This is going to have a lot of writes, fewer updates, and a lot of searching... 
 the databases are about 2GB each, and they are monthly created (basically for 
storing stats).  Typically, only the current, and past 2-3 months are accessed, 
and the others are just there for archival purposes.

My reasoning for going SSD over 15k drives was speed.  The lookups would 
(should) be faster,  or so I would think.
What are your thoughts about this?  is this a good idea?  do you have better 
idea?   The only thing on this server would be MySQL, the stats database, and a 
couple others that are used daily, but not nearly as active as the stats db.
Thanks for any and all help!
MV.                                     

With this information, with 16GB RAM all your live data will easily fit in RAM at any given time - read speed will not be dependent on the disks once the data is loaded.

Write speed might. "lots of writing" - what is that? 1000 10kB inserts/sec? 100 1MB inserts/sec?

Best,

/ Carsten

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