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Date: Sun, 15 Sep 2013 04:05:04 -0700
Message-ID: <CAN0CFw3TLW8SYBqOxkZgpp0e5YYYAvALLadZrGCEWsMMi_hXkg@mail.gmail.com>
Subject: Re: [gentoo-user] Re: {OT} Need a new server
From: Grant <emailgrant@gmail.com>
To: Gentoo mailing list <gentoo-user@lists.gentoo.org>
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>>> 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