After using LVM for 15 years, I'd never want to admin a system without it. It
would be like going back in time. I can add/remove space, add/remove spindles,
move which spindles an LVM is on. And the capabilities keep getting better. Add
to that snapshots and what they do for backups... All with
I've also heard good things about the intel x25E drives (a bit too costly for
us however).
George
> -Original Message-
> From: u2-users-boun...@listserver.u2ug.org [mailto:u2-users-
> boun...@listserver.u2ug.org] On Behalf Of Glen Batchelor
> Sent: Wednesday, April 28, 2010 2:35 PM
> To:
We do not. I can say since moving to a JFS type filesystem, we've not had a
problem even when the power was pulled on a couple occasions by loss of dual
Entergy power feeds and simultaneous UPS rooms failing. And those times I have
restored files (usually to an alternate location for comparison
Look at EasyCo's MFT. I'm still trying to sort out drive-specific issues,
but initial performance benchmarks are just awesome. We have 4 OCZ Vertex
Turbo 60GB drives in softRAID level 5. The restructuring of the block writes
also extends the life of the drives.
-
This I will have to look into. Right now I'm deciding if I want to
setup the partitions in an LVM or not.
Thanks
> -Original Message-
> From: u2-users-boun...@listserver.u2ug.org [mailto:u2-users-
> boun...@listserver.u2ug.org] On Behalf Of Robert Porter
> Sent: Wednesday, April 28, 2010
I considered adding a few SSD to our server, but given they 'wear' out
faster with increased writes, we dropped that idea. I've played with
the tmpfs before. I have a script that creates the fs, then untars a
tar file into it (a saved Universe Account). When I'm done, I run the
other script to reta
Do you do a dbpause at all during this snapshot process?
-Original Message-
From: u2-users-boun...@listserver.u2ug.org
[mailto:u2-users-boun...@listserver.u2ug.org] On Behalf Of Robert Porter
Sent: Wednesday, April 28, 2010 1:09 PM
To: U2 Users List
Subject: Re: [U2] Universe and strippe
I am filled with wonder for the salesman who sells striping of
solid-state server drives.
--Bill
-Original Message-
From: u2-users-boun...@listserver.u2ug.org
[mailto:u2-users-boun...@listserver.u2ug.org] On Behalf Of George Gallen
Sent: Wednesday, April 28, 2010 12:47 PM
To: U2 Users L
Many 'nix systems not longer require breaking mirrors for backups... We haven't
broken a mirror for backups since the late 90s. HP-UX and Linux for example. A
MUCH better option is using logical volumes (and yes, you can still mirror and
stripe) as well and use filesystem snapshots to backup. A
In their UniVerse High Availability Executive Overview IBM suggested
Raid 1 + 0 for production data partitions.
See the page from the document here:
http://www.schasny.com/stuff/
or the whole document here:
http://www.schasny.com/stuff/ha.pdf
George Gallen wrote:
We are in the process of upg
In most unixes, you can do it at the OS level.
> From: ggal...@wyanokegroup.com
> To: u2-users@listserver.u2ug.org
> Date: Wed, 28 Apr 2010 12:27:34 -0500
> Subject: Re: [U2] Universe and stripped drives
>
> interesting idea. Wonder if our RAID controller can do a 3 way mirror?
> I'll have to c
In message
<6d57ef06d84b5541af530227504bb68f5c4f4ef...@34093-mbx-c06.mex07a.mlsrvr.c
om>, George Gallen writes
I planned on doing this as well. There will be 3 system drives
which I'm going to put some of our busy temp files.
How much ram have you got? How big are your temp files?
Have you g
When I had trouble connecting ColdFusion to UniVerse, I wrote a little NetBeans
Java program with the JDBC connection string info. Debugging this little test
program helped with clarifying the pesky connection string details.
--Bill
-Original Message-
From: u2-users-boun...@listserv
Has anyone ever connected to the Pentaho Data Integration component (PDI, also
called Kettle)? I am trying to connect through Native JDBC connector. I can't
seem to get it to work.
'We act as though comfort and luxury were the chief requirements of life, when
all that we need to make us happy
Aix does all of this quite seamlessly.
You can even configure file systems to use the inner, middle or outer
parts of the drives.
Mirroring has saved our butts several times, even within the past couple
months.
It is very comforting when you're reading your Monday morning email and
discover a fa
If you create 2 stripes, will you have 2 disk controllers? If not, I don't see
much difference between the two. I'd be more concerned with file sizing, and
using indices rather than sequential searches, and other tuning techniques
(read-ahead parameters, file caching, fs buffering, etc.). One c
interesting idea. Wonder if our RAID controller can do a 3 way mirror?
I'll have to check into that. Guess I could always add a second drive
array for the third mirror later on (the drives are cheaper, not cheap
enough yet - we are using SAS drives for the data drives, and SATA for
the system drive
I planned on doing this as well. There will be 3 system drives
which I'm going to put some of our busy temp files.
> -Original Message-
> From: u2-users-boun...@listserver.u2ug.org [mailto:u2-users-
> boun...@listserver.u2ug.org] On Behalf Of bradley.sch...@usbank.com
> Sent: Wednesday, Ap
My opinion is to stripe all your data over as many drives as possible.
Regarding mirroring, I would suggest a third mirror.
The third mirror can be broken anytime during the day and used for
backup, then 're-sync'd.'
This configuration provides for minimum data loss due to (the number one
cause
I am not a disk guy, but striping has provided significant performance
gains for. Separating the busiest files from everything else can also help
a lot; it keeps your busiest files from dragging down the rest of the
system/account. If you're on *nix, you can do some very creative things
like is
We are in the process of upgrading our system.
When we setup our current system, it was suggested we strip our data drives (5)
into one,
instead of having 5 separate drives, so it could pull more data at once.
The new system will have 6 drives available for striping
We were going to have 6 driv
Hi Karen
Just because you're entering the Dark Side, doesn't mean you have to
unsubscribe - MV has a habit of drawing people back, you know (you'll never
escape). And don't forget, many of us use .Net with uv...
Congrats
Brian
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