Displaying 20 results from an estimated 7000 matches similar to: "RAID performance design? /home and os"
2007 Mar 27
2
Thanks to the list for 3ware RAID info...
All:
Thanks to everyone who participated in the rather long thread
recently about RAID arrays and CentOS. I have been needing to
research RAID for CentOS for some time, so the discussion was timely
for me.
Based on the discussion in that thread, I bought a 3ware 9650SE card
and a bunch of WD drives. I was told by 3ware that 9650SE driver
will likely not be in the CentOS 5 kernel
2008 Jun 22
8
3ware 9650 issues
I've been having no end of issues with a 3ware 9650SE-24M8 in a server that's
coming on a year old. I've got 24 WDC WD5001ABYS drives (500GB) hooked to it,
running as a single RAID6 w/ a hot spare. These issues boil down to the card
periodically throwing errors like the following:
sd 1:0:0:0: WARNING: (0x06:0x002C): Command (0x8a) timed out, resetting card.
Usually when this
2007 Oct 09
6
PCI-X SATA RAID Controllers
Hello All,
What would be the lists recommendation for an 8 port controller with
native support for Centos 5.0? Currently have a 3ware 9650SE which does
not...
Cheers
Steve
2011 Sep 01
2
CentOS 6.0 and 3ware 9650SE series RAID Performance
Hello,
Does anyone have experience using a 3ware 9650SE series raid controller on
CentOS 6.0?
I am getting very sporadic throughput with moderately sized files (0.5-2GB)
on ext3. I have tried most of the mount time tuning options:
* noatime
* trying different journal types
* setting commit=120 - helped a little
Even after these optimizations it doesn't seem like the raid array is
working
2012 Feb 07
2
Centos 5.6 3ware raid 5
Hi, I've seen comments about the poor performance of these cards with
raid 5 configs. I have an old card with 3 x 500G IDE drives connected in
raid 5 and I'm getting around 10mb/s write performance. :-(
I'm seeing high iowait figures at times and associated very high cpu
load average figures, probably because, under load, everything is
stacked up waiting for the disks to actually
2007 Aug 21
2
Tracking how many open files a process has?
I'm getting a "Too many open files" on a fileserver.
Is it possible to list how many open files each process has? If so how do
you do that?
Greets,
Chris
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.centos.org/pipermail/centos/attachments/20070821/3d8eb5d3/attachment.html>
2006 Aug 28
2
32bit versus 64bit memory usage?
I'm planning for new Centos 4 computers using the 64bit distribution and is
wondering
if there is a difference on how much RAM memory you should use on a 32bit
versus
64bit operating system?
Will processes such as for example KDE, Firefox use more memory on the 64bit
architecture
than on the 32bit and if so by how much as a rule of thumb?
Kind regards,
Christian
-------------- next part
2007 Aug 29
3
IBM X3200
Hi ppl .
I am getting a IBM x3200.. This machine can only support up to 4 x 250GB
SATA. I need to have a usable space of 500GB and mirror it to other 500GB.
IBM proposed me to get 2 RAID cards. Do you guys think i can do raid 0 on
the first 2 x 250GB HDD and raid 0 on the second 2 x 250GB hdd, both on
hardware raid and then during the installation of centos 5, i raid 1 on both
the 2 sets of
2013 Mar 06
3
[OT/HW] hardware raid -- comment/experience with 3Ware
Greetings,
I am looking for a hardware raid card that supports up to 4 SATA II
hard disks with hot swap (compatible raid cage)
I have short listed two LSI/3Ware cards:
1. 9750-4i
2. 9650SE-4LPML
Both appear to be well supported in Linux.
I would appreciate your personal experience with the CLI tools
provided by LSI.
Can they be configured to send email for disk failures or SMART errors?
Is
2007 Nov 26
4
Filesystem for Maildir
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
</head>
<body bgcolor="#ffffff" text="#000000">
<font size="-1"><font face="Verdana">Hi all,<br>
<br>
In last year, i had made some research and benchmarks based on CentOS 4
to know which filesystem is better for
2010 Apr 13
6
12-15 TB RAID storage recommendations
Hello listmates,
I would like to build a 12-15 TB RAID 5 data server to run under
ContOS. Any recommendations as far as hardware, configuration, etc?
Thanks.
Boris.
2006 Jul 12
6
Speaking of 3Ware/RAID/SATA/9550SX...
I just built up a server running CentOS 4.3, and trying to boot from a 3Ware
9550SX-16ML, 16 port card. This system has 9x500GB drives, AMD Opteron, Tyan
K8SD mobo and 1 GB of ram. I downloaded the latest (9.3.0.4) driver from
3Ware, and after a couple of botched attempts, I got CentOS installed. In my
two botched attempts, the problem was X hanging during the formatting of the
drives, so I
2009 May 08
3
Software RAID resync
I have configured 2x 500G sata HDD as Software RAID1 with three partitions
md0,md1 and md2 with md2 as 400+ gigs
Now it is almost 36 hours the status is
cat /proc/mdstat
Personalities : [raid1]
md0 : active raid1 hdb1[1] hda1[0]
104320 blocks [2/2] [UU]
resync=DELAYED
md1 : active raid1 hdb2[1] hda2[0]
4096448 blocks [2/2] [UU]
resync=DELAYED
md2 : active raid1
2010 Aug 13
5
upgrading storage on hardware RAID 10 possible?
Hi all,
Can anyone please tell me, from experience, if it's possible to
upgrade the hard drives in a RAID 10 system from 250GB HDD's to 500GB
/ 750GB HDD's, while the server is running? The server runs CentOS 5.5
x64.
Our hardware vendors simply always say no, so we never actually tried
doing this, and when a client needed an upgrade like this we had to
build a new server with the
2013 Jan 30
8
RAID 0 across SSD and HDD
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
I''ve been unable to find anything definitive about what happens if I use
RAID0 to join an SSD and HDD together with respect to performance
(latency, throughput). The future is obvious (hot data tracking, using
most appropriate device for the data, data migration).
In my specific case I have a 250GB SSD and a 500GB HDD, and about 250GB of
2012 Nov 20
6
zvol wrapped in a vmdk by Virtual Box and double writes?
Hi folks, (Long time no post...)
Only starting to get into this one, so apologies if I''m light on detail,
but...
I have a shiny SSD I''m using to help make some VirtualBox stuff I''m
doing go fast.
I have a 240GB Intel 520 series jobbie. Nice.
I chopped into a few slices - p0 (partition table), p1 128GB, p2 60gb.
As part of my work, I have used it both as a RAW
2008 Jul 23
3
3ware 9650SE drivers for CentOS 5.0-EL kernel 2.6.18-8
Hi,
I'm trying to install K12LTSP based on CentOS 5.0-el 32bits kernel
2.6.18-8 on a server with 3ware 9650SE raid controller. Does anybody
know where I can find a driver diskette for the raid controller as this
is only supported from kernel 2.6.19.
Thanks for any help
Gert
2007 Dec 12
1
How do you backup a LVM LV?
I have a virtual machine in a Xen LV, that I would like to backup from hostA
to hostB
because hostA is software broken. How do I copy and recreate that LV on
hostB?
Greets,
Chris
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.centos.org/pipermail/centos/attachments/20071213/bce2df4a/attachment-0002.html>
2006 Dec 08
1
XML, XPATH in Centos?
What built in utilities are there that can evaluate XML XPath statements in
CentOS?
Its needed to grab certain info from <a href="some.html">some</a> from a
page with a python, perl or shell script.
Hints on what to use would be appreciated.
Chris
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
2006 Aug 17
1
Strange apache behaviour
Hi Centos folks!
I'm trying to get a file with wget from Apache on Centos 3 and it doesnt
succed.
What could be the cause of this what is the resource that is not available,
whats your oppinion?
strace short output
---------------------------
read(14, "GET /centos/3/os/i386/heade"..., 8000) = 133
read(5, 0xbfff99f3, 1) = -1 EAGAIN (Resource temporarily
unavailable)