[CentOS] Re: settings up cheap a NAS / SAN server, is it possible?

Thu Jul 3 21:23:23 UTC 2008
MHR <mhullrich at gmail.com>

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!!!!
>>
>>
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>>
>
>
>
> --
> "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"
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>
>

Could you PLEASE edit your replies?

Thanks.

mhr