[CentOS] Re: settings up cheap a NAS / SAN server, is it possible?
MHR
mhullrich at gmail.com
Thu Jul 3 21:23:23 UTC 2008
On Wed, Jul 2, 2008 at 3:35 PM, Victor Padro <vpadro at gmail.com> wrote:
>
>
> On Wed, Jul 2, 2008 at 5:27 PM, Scott Silva <ssilva at sgvwater.com> wrote:
>>
>> on 7-2-2008 3:14 PM Victor Padro spake the following:
>>>
>>> "It is human nature to think wisely and act in an absurd fashion."
>>>
>>> "Todo el desorden del mundo proviene de las profesiones mal o
>>> mediocremente servidas"
>>>
>>> On Wed, Jul 2, 2008 at 11:08 AM, Scott Silva <ssilva at sgvwater.com
>>> <mailto:ssilva at sgvwater.com>> wrote:
>>>
>>> on 7-2-2008 8:52 AM Victor Padro spake the following:
>>>
>>>
>>>
>>> On Wed, Jul 2, 2008 at 8:50 AM, Rudi Ahlers
>>> <Rudi at softdux.com
>>> <mailto:Rudi at softdux.com>
>>> <mailto:Rudi at softdux.com
>>> <mailto:Rudi at softdux.com>>> wrote:
>>>
>>> nate wrote:
>>>
>>> Rudi Ahlers wrote:
>>>
>>> I think my action plan now will be to
>>> figure out how to
>>> install CentOS
>>> on a USB memory stick and make it boot on any machine
>>> (making it easy to
>>> replace if need be), and then to play around with the
>>> RAID a
>>> bit and see
>>> how well it works.
>>>
>>> Another option you may want to consider is a PATA->CF
>>> adapter. I use
>>> these for my OpenBSD firewalls and have them installed on
>>> 1GB CF
>>> cards.
>>> Performance should be better? Compatibility certainly is
>>> better,
>>> there's
>>> no way I could boot to USB off these aging P3-800
>>> systems. The
>>> CF cards
>>> just show up as regular HDs
>>>
>>> I use these ($7):
>>>
>>> http://www.geeks.com/details.asp?invtid=SY-ADIDE2CF-B1&cpc=SCH
>>> <http://www.geeks.com/details.asp?invtid=SY-ADIDE2CF-B1&cpc=SCH>
>>>
>>> <http://www.geeks.com/details.asp?invtid=SY-ADIDE2CF-B1&cpc=SCH
>>> <http://www.geeks.com/details.asp?invtid=SY-ADIDE2CF-B1&cpc=SCH>>
>>>
>>> Paired with Lexar CF cards. Not all CF is created equal,
>>> well
>>> maybe it is
>>> today. I found my Lexar CF cards were 5-10x faster than my
>>> Kingston cards
>>> of the same size, which surprised me. Not that I need high
>>> performance in
>>> firewalls that do no disk I/O but it was painful for the OS
>>> install to
>>> take hours(Kingston) instead of minutes(Lexar). Both
>>> pairs of CF
>>> cards
>>> are a few years old, today maybe everything out there is
>>> reasonably
>>> fast.
>>>
>>> At least with the above adapters be aware that those
>>> adapters above
>>> do stick up. I think a 2U chassis can fit them(I have tons
>>> of
>>> experience
>>> in supermicro systems). But no guarantees. You may need
>>> another
>>> adapter
>>> or perhaps a male to female IDE cable so that you can
>>> mount it
>>> another
>>> way in the chassis.
>>>
>>> I suppose you could even get two and run RAID.
>>>
>>> Just don't put your swap on the flash if you can avoid it.
>>>
>>> nate
>>>
>>>
>>> ______________________________________________
>>>
>>> Thanx, nate
>>>
>>> That's a good suggestion, but I think the USB memory sticks
>>> could
>>> work better / more reliable, and will be easier to access in
>>> the
>>> cabinet. I'll play around with it a bit and see how it works.
>>>
>>>
>>> --
>>> Kind Regards
>>> Rudi Ahlers
>>> CEO, SoftDux
>>>
>>> Web: http://www.SoftDux.com
>>> Check out my technical blog, http://blog.softdux.com for Linux
>>> or
>>> other technical stuff, or visit
>>> http://www.WebHostingTalk.co.za for
>>> Web Hosting stuff
>>>
>>> _______________________________________________
>>> CentOS mailing list
>>> CentOS at centos.org
>>> <mailto:CentOS at centos.org>
>>> <mailto:CentOS at centos.org
>>> <mailto:CentOS at centos.org>>
>>>
>>> http://lists.centos.org/mailman/listinfo/centos
>>>
>>>
>>>
>>> Hi,
>>>
>>> (I apologize in advance if someone thinks this is OT)
>>>
>>> I've been reading this thread since it started, and what I could
>>> really say is you should go for freenas, it can be installed in
>>> a matter of minutes in a usb pendrive, I use it on a 2gb
>>> kingston one using an IBM eServer tower chassis, Intel D201GLY2
>>> mainboard, 1Gb 667Mhz RAM, 2 HDs those are 750gb SATA in RAID5
>>>
>>>
>>> 2 drives in raid5? Then it is really only a raid 0, and will fail
>>> sooner or later.
>>>
>>>
>>> Even if it's fake RAID5(RAID software)?
>>> Didn't know that.
>>
>> Raid 5 need a minimum of 3 drives. The only way to get 2 drives in
>> software raid is to create the array with the "missing" statement.
>> With only 2 drives, you have a stripe with a failed parity.
>>
>> So 2 drives is already missing one, and the next failure is doom.
>> Raid 1 (mirror) is fine with 2 drives.
>
> Then I will have to backup ASAP and re install the Array in Raid1, thank
> you scott.
> But the odd thing its that I've never had any errors regarding RAID or even
> HDs.
> Will recheck my config.
>
>>
>>
>> --
>> MailScanner is like deodorant...
>> You hope everybody uses it, and
>> you notice quickly if they don't!!!!
>>
>>
>> _______________________________________________
>> CentOS mailing list
>> CentOS at centos.org
>> http://lists.centos.org/mailman/listinfo/centos
>>
>
>
>
> --
> "It is human nature to think wisely and act in an absurd fashion."
>
> "Todo el desorden del mundo proviene de las profesiones mal o mediocremente
> servidas"
> _______________________________________________
> CentOS mailing list
> CentOS at centos.org
> http://lists.centos.org/mailman/listinfo/centos
>
>
Could you PLEASE edit your replies?
Thanks.
mhr
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