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If you are purchasing new equipment, you may need to keep in mind that any and all warranty or service contract support on the box will likely require you to keep only known qualified hardware in it.
Warranty and contract support for ANYTHING related to filesystems and disks might be suspended if such a third-party device is in the chassis.
You need to get an accurate answer on this from the company instead of some response from a user-to-user forum.
Go contact the people you're going to be buying it from, else log a SR for this question if the hardware is going to be Oracle/Sun-branded.
Only you can now if your system needs an SSD or not. We have succesfully used the flash accelerator cards in ZFS hybrid storage pools. I have also even used external USB flash devices succesfully. What are you storage needs? What do you want to do with the server? The options to use SSDs are basically these:
- as a L2ARC cache device for a zpool to speed up zfs reads
- as a seperate ZIL device to speed up writes (but you may want to mirror ZIL)
- as the only device for a filesystem or ASM
- as a device for database smart flash cache
I'd recommend to start looking at the problem you want to solve with an SSD before buying one and wonder how to use it to solve a problem that does not even exist for you.