Saturday, November 22, 2008

[BLUG] Anyone encountered GPT yet?

I'm setting up a new backup server with a large disk arrray (4 x 1TB
drives in RAID-5). When I loaded CentOS 5.2 and went through the
partition editor, I decided to switch over to the console and run fdisk,
at which point it told me that fdisk doesn't support GPT partitions.
This is the first time I've encountered one and had to look it up.

http://en.wikipedia.org/wiki/GUID_Partition_Table

It looks like my 3ware RAID controller set it up to use GPT for me
since the volume is 2.8TB in size, which is over the 2TB limit that an
MBR supports.

I actually couldn't use the GPT format across the whole
disk array because CentOS complained that the PC BIOS doesn't support
booting to that type of partition table. So in the RAID controller I
had to make one smaller volume to boot from and a second volume with the
GPT table.

Its a good thing to know about if you haven't encountered it yet
because its coming our way. Especially once we start having 2TB+
single drives.

--
Mark Krenz
Bloomington Linux Users Group
http://www.bloomingtonlinux.org/
_______________________________________________
BLUG mailing list
BLUG@linuxfan.com
http://mailman.cs.indiana.edu/mailman/listinfo/blug

Re: [BLUG] Black molex power connector

Its just like the white molex connector as far as I could tell, except
its black. I could see your point if all of them where black, but for
each power branch that has a white molex connector, there is a black one
coming off the same branch. It just seems like the black one is meant
for a different purpose or connector.

It seems to be working though, I tried using the black one for my SATA
DVD-ROM drive using a molex to SATA converter. I just installed CentOS
with it so I guess its fine. If its not meant for that, I'm only out a
$30 drive hopefully.

On Sat, Nov 22, 2008 at 09:35:20PM GMT, Simón Ruiz [simon.a.ruiz@gmail.com] said the following:
> Mark,
>
> I just bought a couple of new power supplies at Fry's to replace a
> couple that burned out on me (ugh, horrid smell...still raises the
> hairs on the back of my neck.), and they came with black molex
> connectors. I didn't give it a second thought, plugged all my drives
> in and they work.
>
> Does it have squeezable bits on the sides for unlatching it from the drives?
>
> I think they're just a sorely overdue update to the standard molex
> plug design. I don't *believe* they signify anything special re: the
> power supplied by them. None of my hard or optical drives have
> exploded, anyhow...yet. ;-)
>
> Simón
>
> On Sat, Nov 22, 2008 at 3:54 PM, Mark Krenz <mark@slugbug.org> wrote:
> >
> > Hi, not sure if anyone will know this. I bought a Supermicro chassis
> > and the power supply has some molex connectors on it that are black
> > instead of the normal white. Does anyone know what this means? I can't
> > find anything about this online or even on Supermicro's site. Thought
> > maybe someone here has encountered them.
> >
> > --
> > Mark Krenz
> > Bloomington Linux Users Group
> > http://www.bloomingtonlinux.org/
> > _______________________________________________
> > BLUG mailing list
> > BLUG@linuxfan.com
> > http://mailman.cs.indiana.edu/mailman/listinfo/blug
> >
>
> _______________________________________________
> BLUG mailing list
> BLUG@linuxfan.com
> http://mailman.cs.indiana.edu/mailman/listinfo/blug
>

--
Mark Krenz
Bloomington Linux Users Group
http://www.bloomingtonlinux.org/

_______________________________________________
BLUG mailing list
BLUG@linuxfan.com
http://mailman.cs.indiana.edu/mailman/listinfo/blug

Re: [BLUG] Black molex power connector

Mark,

I just bought a couple of new power supplies at Fry's to replace a
couple that burned out on me (ugh, horrid smell...still raises the
hairs on the back of my neck.), and they came with black molex
connectors. I didn't give it a second thought, plugged all my drives
in and they work.

Does it have squeezable bits on the sides for unlatching it from the drives?

I think they're just a sorely overdue update to the standard molex
plug design. I don't *believe* they signify anything special re: the
power supplied by them. None of my hard or optical drives have
exploded, anyhow...yet. ;-)

Simón

On Sat, Nov 22, 2008 at 3:54 PM, Mark Krenz <mark@slugbug.org> wrote:
>
> Hi, not sure if anyone will know this. I bought a Supermicro chassis
> and the power supply has some molex connectors on it that are black
> instead of the normal white. Does anyone know what this means? I can't
> find anything about this online or even on Supermicro's site. Thought
> maybe someone here has encountered them.
>
> --
> Mark Krenz
> Bloomington Linux Users Group
> http://www.bloomingtonlinux.org/
> _______________________________________________
> BLUG mailing list
> BLUG@linuxfan.com
> http://mailman.cs.indiana.edu/mailman/listinfo/blug
>

_______________________________________________
BLUG mailing list
BLUG@linuxfan.com
http://mailman.cs.indiana.edu/mailman/listinfo/blug

[BLUG] Black molex power connector

Hi, not sure if anyone will know this. I bought a Supermicro chassis
and the power supply has some molex connectors on it that are black
instead of the normal white. Does anyone know what this means? I can't
find anything about this online or even on Supermicro's site. Thought
maybe someone here has encountered them.

--
Mark Krenz
Bloomington Linux Users Group
http://www.bloomingtonlinux.org/
_______________________________________________
BLUG mailing list
BLUG@linuxfan.com
http://mailman.cs.indiana.edu/mailman/listinfo/blug