>>> It's time to switch hosts. I'm looking at the following: >>> >>> Dual Xeon E5-2690 >>> 32GB RAM >>> 4x SSD RAID10 >> If I make this 6x SSD RAID10 with redundant power supplies, what is my >> weakest link as far as hardware? If a CPU craps out, will the system >> keep running? >> >> - Grant >> > consider making the main memory ECC too and flick the correct switches > in kernel to ensure ECC is monitored. > no point in ensuring the data is resilient if the content is garbled.
Soft Layer does use ECC memory and I will make sure I'm monitoring it. > and also consider what happens if the raid controller fails due to a > popped capacitor five years from now > will you still be able to get a like for like replacement ? > bear in mind that you may have to keep the raid card firmware up to date > in order to be compatible with newer cards > of course, this is all relative to how long you stay with your host but > you have to decide how much resilience you want to build in. Can the RAID controller's firmware be updated in a running system? > it's the mechanical parts of spinning rust or pseudo mechanical nand > gate switching for SSD that will tend to fail, > secondary to that in most places the PSU acts as a static cling with a > dust blower attached, and any slight knock knocks the dust off causing a > short circuit especially if any humidity is caught in the air > also consider the fans blowing around the air inside the machine That's great, I'm planning on 6xSSD RAID 10 and redundant power supplies/feeds so I should be pretty well covered. - Grant
