[clug-talk] OT: Help me pick my hardware

Dan Graham grahadan at gmail.com
Mon Mar 26 08:23:05 PDT 2012


cron and dd with multiple sticks is a cool idea but can you use dd to image
a mounted filesystem? I've never tried it.

Thanks again, Dan

On Mon, Mar 26, 2012 at 6:52 AM, Royce Souther <osgnuru at gmail.com> wrote:

> /sys should not be needed in a server unless you have a goofy NIC that
> needs proprietary firmware ROM to work. I remove it from my servers without
> issue.
> /proc does not actually exist on the physical file system. It is a special
> mount that maps to memory inside the running kernel and lets you see what
> the kernel is doing but no data is ever written to disk
> /var/log can be redirected to a different log server on the network and
> that is a good way to find out what happens when the USB / root boot server
> dies
> /tmp can be mounted to a RAM disk
>
> And with those changes there should be very few write cycles to the USB
> memory stick and a quality thumb drive it could last many years. You can
> have a second or even a third USB stick connected to the USB ports and you
> can use dd and a cron script to once a day keep the other sticks up to date
> with the main boot stick, no need for RAID1 and IPMI will let you switch if
> the main stick dies.
>
> Thanks for the idea. I am going to try this. I will let you know how it
> goes.
>
>
> On Sun, Mar 25, 2012 at 9:03 PM, Dan Graham <grahadan at gmail.com> wrote:
>
>> It's just like an external usb port on the back of the mainboard but its
>> located near the sata ports. I use a cheap usb stick for boot root and have
>> not bothered to worry about /sys /proc /var/log etc. I used to symlink
>> /var/log etc to a physical disk. Last couple of times I just got lazy and
>> did not bother. My last stick on my old Supermicro board (with the same
>> feature) went for a year and a half without intervention, running full
>> read/write 24/7. Regardless I feel very confident that no matter how you
>> deploy this board it will make you happy. To install on usb stick just make
>> sure its plugged in, setup bios to boot from it and install as you would
>> normally from CD or use IPMI across the network from your workstation with
>> an iso image (This is just pure "GEEK SEX"), less the swap of course. (Just
>> use lottsa RAM) :)
>>
>> Seriously do this and feel the love....
>>
>>
>> On Sun, Mar 25, 2012 at 7:50 PM, Royce Souther <osgnuru at gmail.com> wrote:
>>
>>> Is it any different then a normal USB port out the back? Other then a
>>> port out the back is in danger of having someone pull the stick out.
>>>
>>> Can you make that USB port a read-only drive and have the system use RAM
>>> for a read-write / root like a unisonfs? I would not want the memory stick
>>> to die from to many write cycles.
>>>
>>> Do you have to do anything special with OS to install it on the memory
>>> stick?
>>>
>>> Supper easy OS upgrades, just build a new thumb drive at your desk and
>>> swap it at reboot.
>>>
>>>
>>> On Sun, Mar 25, 2012 at 6:35 PM, Dan Graham <grahadan at gmail.com> wrote:
>>>
>>>> Oh and I forgot the coolest part. It has a USB port integrated right on
>>>> the main board which is where I install the boot/root filesystem. It lets
>>>> me use all the sata ports for /home. ... :)
>>>>
>>>> Cya, Dan
>>>>
>>>>
>>>> On Sun, Mar 25, 2012 at 6:30 PM, Dan Graham <grahadan at gmail.com> wrote:
>>>>
>>>>> Hi Royce,
>>>>>
>>>>> I recently acquired one of these: It has dual gig Ethernet (Intel) an
>>>>> IPMI port for remote headless access, etc. For $179 it is just amazing. I
>>>>> put a Sandy Bridge quad core Xeon on it for $240 and run a number of KVM
>>>>> VMs on it and it just flies. CPU power consumption maxes out at 80 Watts,
>>>>> and idles at 20 or less. You could do far worse than this one.
>>>>> All the best, Dan
>>>>>
>>>>> Mainboard:
>>>>>
>>>>> http://www.newegg.ca/Product/Product.aspx?Item=N82E16813182262&nm_mc=TEMC-RMA-Approvel&cm_mmc=TEMC-RMA-Approvel-_-Content-_-text-_-
>>>>>
>>>>> Xeon CPU:
>>>>>
>>>>> http://www.newegg.ca/Product/Product.aspx?Item=N82E16819115083&nm_mc=TEMC-RMA-Approvel&cm_mmc=TEMC-RMA-Approvel-_-Content-_-text-_-
>>>>>
>>>>>
>>>>> On Sun, Mar 25, 2012 at 11:53 AM, Jamie Furtner <jamie at furtner.ca>wrote:
>>>>>
>>>>>> On 2012-03-25 8:52 AM, Royce Souther wrote:
>>>>>>
>>>>>>> I am trying to put together a file server and trying to get as many
>>>>>>> SATA ports as I can. I found a motherboard I like but it only has 6 SATA
>>>>>>> ports. It also has PCI-Ex8 and PCI-Ex16 slots. I want to add a SATA card.
>>>>>>> Supermicro makes an 8 port SATA card that is PCI-Ex4.
>>>>>>>
>>>>>>> Can I use a PCI-Ex4 cards in a PCI-Ex8 or PCI-Ex16 slot? If so then
>>>>>>> I can have 22 SATA drives in this box.
>>>>>>>
>>>>>>>  Yes, you can use a card that uses a smaller number of PCIe channels
>>>>>> in a larger slot - the reverse is not true of course. The card won't be any
>>>>>> faster than if it were plugged into its native slot but it works correctly.
>>>>>>
>>>>>> This means you can use a x1 card in a x1, x4, x8 or x16 slot, a x4
>>>>>> card in a x4, x8, or x16 slot and so forth.
>>>>>>
>>>>>> Jamie
>>>>>>
>>>>>> --
>>>>>> Jamie Furtner jamie at furtner.ca
>>>>>> "I aim to misbehave"
>>>>>> - Malcom Reynolds (Serenity movie)
>>>>>> "It's not safe...
>>>>>> "For them."
>>>>>> - River Tam (Serenity movie)
>>>>>>
>>>>>>
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>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> One thing you can be sure of. If you throw a loaded gun in a monkey
>>>>> cage, something bad is going to happen.
>>>>>
>>>>
>>>>
>>>>
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>
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-- 
One thing you can be sure of. If you throw a loaded gun in a monkey cage,
something bad is going to happen.
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