Take SSD for the speed, the more intelligible to the entry server SSD.
RAID5 or 6 is great for storage cost GB price significant impairment of writing performance.
That is not very clear for what purpose you are considering 5 or RAID 6 on a good SSD. If the volume is important - then take the cheaper S45xx
and generally those who have experience of using SSDs in raids for a long term(3-5 years) how to behave ssd
Intel - great acting. Even with food problems, they have full-time the capacitor is holding enough power for the correct recording of the entire disc that promised system. The cakes
are described as Enhanced Power Loss Data Protection
We also use a lot of Intel s various years (a long time for a hundred pieces) was Changed mainly because the volume rested. With a disk failure occurs only once. And it's all in the conditions under constant load postgresql.
In General, we unreservedly recommend to take servers Intel SSD (if possible) for reliability and predictable latency under load. Other discs - very
much differently behave.
2) on the basis of the question, it makes sense to do RAID 5 or 6 if still all the SSD is written from the data ? it turns out by the end of the volume recording the ssd will have to change all the disks at once if which had not failed
I don't see the point in RAID 5/6 on a good SSD Lifetime Writes without touching
1) this controller has hp smartpath, when activated, the linear velocity is much lower, about 2 times than when you enable the integrated cache, it makes sense on(smartpath or off) ?
Better softraid. Seriously. No kidding. Dumb HBA and softraid.
hardraid a good SSD it is necessary or very hard to configure well knowing your controller or you will be stopped by the performance of the controller, not the drives.
PS: why do you need the linear velocity of the base and the path? Test random io.