>> You know what, let me try just that today, I have a new install to do, so
>> I'll try pre-creating a RAID10 on install and report back. First I'll try
>> layered MD devices and then I'll try creating a RAID10 md device and we'll
>> see if it can even boot off them.
>>
>
> Ok, I verified th
On Tue, Sep 1, 2009 at 11:09 AM, Chan Chung Hang
Christopher wrote:
>
> I would NOT do that. You should like the md layer handle all things raid
> and let lvm do just volume management.
Your under the asumption that they are two different systems.
>>>
>>> You're under the assumpti
On Tue, Sep 1, 2009 at 9:44 AM, Ross Walker wrote:
> On Aug 31, 2009, at 7:59 PM, Christopher Chan
> wrote:
>
>> Ross Walker wrote:
>>>
>>> Problem is the install program doesn't support setting up RAID10 or
>>> layered MD devices.
>>>
>> Oh? I have worked around it before even in the RH9 days. Ju
I would NOT do that. You should like the md layer handle all things
raid
and let lvm do just volume management.
>>> Your under the asumption that they are two different systems.
>>>
>>>
>> You're under the assumption that they are not.
>>
>
> http://en
On Aug 31, 2009, at 7:59 PM, Christopher Chan wrote:
> Ross Walker wrote:
>> On Aug 30, 2009, at 10:33 PM, Christopher Chan
>> >> wrote:
>>
>>
>> How would one setup RAID 1+0 (i.e. 2x mirror'ed RAID1's and
>> then a
>> RAID 0 on top of it) on say CentOS 4.6 ?
>>
>>
> Se
> But note that drive capacity has gone up too, often eliminating the need
> for many-disk arrays. For example, you can go up to 2TB on a single
> drive, so a simple RAID1 mirror may be all you need, and if you can
> arrange the mount points to match the use pattern you may get better
> perfo
Ross Walker wrote:
> On Aug 30, 2009, at 10:33 PM, Christopher Chan
> > wrote:
>
>
> How would one setup RAID 1+0 (i.e. 2x mirror'ed RAID1's and then a
> RAID 0 on top of it) on say CentOS 4.6 ?
>
>
Setup both RAID-1 arrays then stripe them with LVM?
Les Mikesell wrote:
> But note that drive capacity has gone up too, often eliminating the need
> for many-disk arrays. For example, you can go up to 2TB on a single
> drive, so a simple RAID1 mirror may be all you need, and if you can
> arrange the mount points to match the use pattern you may ge
On Aug 31, 2009, at 11:13 AM, Les Mikesell
wrote:
> Chan Chung Hang Christopher wrote:
>>
>> Oh sorry, I have never argued about eight drive systems years ago
>> (didn't have them then, too poor) and there is no argument about
>> raid1+0
>> being the way to do it beyond four drives. It is too
On Aug 30, 2009, at 10:33 PM, Christopher Chan
wrote:
>
How would one setup RAID 1+0 (i.e. 2x mirror'ed RAID1's and then a
RAID 0 on top of it) on say CentOS 4.6 ?
>>> Setup both RAID-1 arrays then stripe them with LVM?
>>>
>>> http://www.redhat.com/magazine/009jul05/features/lvm
Rudi Ahlers wrote:
>
> I'm installing Openfiler 2.3, which looks very very similar to the
> CentOS installer. My reason for RAID 1+0 (like I said it doesn't
> support RAID10) is for the higher level of redundancy & speed, and I
> would like to utilize the drives to their max,
Note that the 'speed
Chan Chung Hang Christopher wrote:
>
> Oh sorry, I have never argued about eight drive systems years ago
> (didn't have them then, too poor) and there is no argument about raid1+0
> being the way to do it beyond four drives. It is too obvious that
> stripping three drives and then mirroring the
Miguel Medalha wrote:
>>> You might be interested in this article:
>>>
>>> "Why is RAID 1+0 better than RAID 0+1?"
>>> http://aput.net/~jheiss/raid10/
>>>
>>>
>>>
>> The whole raid1+0 or raid0+1 argument was really only relevant in the
>> days of pata when one disk dying on one chan
>> You might be interested in this article:
>>
>> "Why is RAID 1+0 better than RAID 0+1?"
>> http://aput.net/~jheiss/raid10/
>>
>>
>
>
> The whole raid1+0 or raid0+1 argument was really only relevant in the
> days of pata when one disk dying on one channel might take out the other
> disk
Oliver Ransom wrote:
> On 31/08/2009, at 1:11 PM, Christopher Chan wrote:
>
>
>> Miguel Medalha wrote:
>>
Can someone please assist met with some software RAID 1+0 setup
instructions? I have searched the web, but couldn't find any. I
found
a lot of RAID 10 setup instru
On 31/08/2009, at 1:11 PM, Christopher Chan wrote:
> Miguel Medalha wrote:
>>> Can someone please assist met with some software RAID 1+0 setup
>>> instructions? I have searched the web, but couldn't find any. I
>>> found
>>> a lot of RAID 10 setup instructions, but it doesn't help me.
>>>
>>>
>
Miguel Medalha wrote:
>> Can someone please assist met with some software RAID 1+0 setup
>> instructions? I have searched the web, but couldn't find any. I found
>> a lot of RAID 10 setup instructions, but it doesn't help me.
>>
>>
>
> As Oliver Ransom replied to you, RAID 1+0 (not to be co
>>> How would one setup RAID 1+0 (i.e. 2x mirror'ed RAID1's and then a
>>> RAID 0 on top of it) on say CentOS 4.6 ?
>>>
>> Setup both RAID-1 arrays then stripe them with LVM?
>>
>> http://www.redhat.com/magazine/009jul05/features/lvm2/
>>
>> Though I'd prefer to opt for a hardware raid card
On Mon, Aug 31, 2009 at 3:12 AM, nate wrote:
> Rudi Ahlers wrote:
>
>> How would one setup RAID 1+0 (i.e. 2x mirror'ed RAID1's and then a
>> RAID 0 on top of it) on say CentOS 4.6 ?
>
> Setup both RAID-1 arrays then stripe them with LVM?
>
> http://www.redhat.com/magazine/009jul05/features/lvm2/
>
On Sun, Aug 30, 2009 at 10:57 PM, Les Mikesell wrote:
> Rudi Ahlers wrote:
>> On Sun, Aug 30, 2009 at 9:57 PM, Miguel Medalha wrote:
Then maybe there is something wrong with your partitioning scheme or
even physical layout. What drives do you have and how are they
partitioned? How ar
Rudi Ahlers wrote:
> How would one setup RAID 1+0 (i.e. 2x mirror'ed RAID1's and then a
> RAID 0 on top of it) on say CentOS 4.6 ?
Setup both RAID-1 arrays then stripe them with LVM?
http://www.redhat.com/magazine/009jul05/features/lvm2/
Though I'd prefer to opt for a hardware raid card, I thin
Rudi Ahlers wrote:
> On Sun, Aug 30, 2009 at 9:57 PM, Miguel Medalha wrote:
>>> Then maybe there is something wrong with your partitioning scheme or
>>> even physical layout. What drives do you have and how are they
>>> partitioned? How are they physically connected?
>>>
>> I beg your pardon, I did
> There is no option to setup RAID 10.
>
>
> But, let's get back to my previous request,
>
> How would one setup RAID 1+0 (i.e. 2x mirror'ed RAID1's and then a
> RAID 0 on top of it) on say CentOS 4.6 ?
>
>
There is no option to setup RAID 10 because you are trying to create an
unsupported co
> I don't know if this makes sense, but to get their RAID10, I first
> need to install it, then use the web interface to setup RAID 10.
> Instead I would like to have openfiler running on the RAID 10 setup as
> well.
>
I don't think that you have a significant gain by doing so. Aren't you
bei
Rudi Ahlers wrote:
> On Sun, Aug 30, 2009 at 9:50 PM, Miguel Medalha wrote:
>>> This page from openfiler.com clearly states the following:
>>>
>>> "Openfiler supports RAID 0, RAID 1, RAID 5, RAID 6 and RAID 10."
>>>
>>> http://www.openfiler.com/products/openfiler-architecture
>>>
>> The page even s
On Sun, Aug 30, 2009 at 9:57 PM, Miguel Medalha wrote:
>
>> Then maybe there is something wrong with your partitioning scheme or
>> even physical layout. What drives do you have and how are they
>> partitioned? How are they physically connected?
>>
>
> I beg your pardon, I didn't see your previous
On Sun, Aug 30, 2009 at 9:53 PM, Miguel Medalha wrote:
>
>> Yet, I can't setup the RAID 10 they talk about, I only have RAID0,
>> RAID1, RAID5 & RAID6 in the setup options, which is why I'm thinking
>> of doing this another way.
>>
>
> Then maybe there is something wrong with your partitioning sche
> Then maybe there is something wrong with your partitioning scheme or
> even physical layout. What drives do you have and how are they
> partitioned? How are they physically connected?
>
I beg your pardon, I didn't see your previous post with the above
information.
At this point, I think
On Sun, Aug 30, 2009 at 9:50 PM, Miguel Medalha wrote:
>
>> This page from openfiler.com clearly states the following:
>>
>> "Openfiler supports RAID 0, RAID 1, RAID 5, RAID 6 and RAID 10."
>>
>> http://www.openfiler.com/products/openfiler-architecture
>>
>
> The page even shows the dialog box to c
> Yet, I can't setup the RAID 10 they talk about, I only have RAID0,
> RAID1, RAID5 & RAID6 in the setup options, which is why I'm thinking
> of doing this another way.
>
Then maybe there is something wrong with your partitioning scheme or
even physical layout. What drives do you have and how
> This page from openfiler.com clearly states the following:
>
> "Openfiler supports RAID 0, RAID 1, RAID 5, RAID 6 and RAID 10."
>
> http://www.openfiler.com/products/openfiler-architecture
>
The page even shows the dialog box to create a RAID 10 group!
___
On Sun, Aug 30, 2009 at 9:44 PM, Miguel Medalha wrote:
> This page from openfiler.com clearly states the following:
>
> "Openfiler supports RAID 0, RAID 1, RAID 5, RAID 6 and RAID 10."
>
> http://www.openfiler.com/products/openfiler-architecture
> ___
> C
This page from openfiler.com clearly states the following:
"Openfiler supports RAID 0, RAID 1, RAID 5, RAID 6 and RAID 10."
http://www.openfiler.com/products/openfiler-architecture
___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailma
On Sun, Aug 30, 2009 at 9:15 PM, Miguel Medalha wrote:
>
>> Although they work, and do the same, the installer CD & mdadm needs to
>> support it. The specific appliance that I want to install, doesn't
>> support RAID 10, so I need to install RAID 1 + RAID 0, i.e. setting 2x
>> RAID 1 mirrors, and t
On Sun, Aug 30, 2009 at 9:10 PM, Jerry Franz wrote:
> Rudi Ahlers wrote:
>> Hi Oliver,
>> It's not the same thing :)
>> Although they work, and do the same, the installer CD & mdadm needs to
>> support it. The specific appliance that I want to install, doesn't
>> support RAID 10, so I need to insta
> Although they work, and do the same, the installer CD & mdadm needs to
> support it. The specific appliance that I want to install, doesn't
> support RAID 10, so I need to install RAID 1 + RAID 0, i.e. setting 2x
> RAID 1 mirrors, and then stripe then in RAID0 - but once the first 1
> mirrors ar
Rudi Ahlers wrote:
> Hi Oliver,
> It's not the same thing :)
> Although they work, and do the same, the installer CD & mdadm needs to
> support it. The specific appliance that I want to install, doesn't
> support RAID 10, so I need to install RAID 1 + RAID 0, i.e. setting 2x
> RAID 1 mirrors, and t
2009/8/30 Götz Reinicke :
> Rudi Ahlers schrieb:
>> Hi,
>>
>> Can someone please assist met with some software RAID 1+0 setup
>> instructions? I have searched the web, but couldn't find any. I found
>> a lot of RAID 10 setup instructions, but it doesn't help me.
>>
> Hi,
>
> what is your purpose wi
On Sun, Aug 30, 2009 at 5:53 PM, Oliver Ransom wrote:
> On 31/08/2009, at 1:18 AM, Rudi Ahlers wrote:
>
>> Hi,
>>
>> Can someone please assist met with some software RAID 1+0 setup
>> instructions? I have searched the web, but couldn't find any. I found
>> a lot of RAID 10 setup instructions, but i
Götz Reinicke wrote:
> Level 5 is the best concerning performance/capacity.
>
raid-5 performs very poorly on random writes, common to database servers.
it also has long rebuild times which increases the possibility of a
double fault.
___
CentOS
Götz Reinicke wrote:
>
>> I am using software RAID 10 with CentOS 5.3 and I surely did see a
>> *huge* performance increase with RAID 10 compared to RAID 1 only.
>
> I tested 1+0 vers 0+1 vers 5 on the 3ware, the sun build in raid system
> and using softwareraid on an other (older) server.
>
>
On Aug 30, 2009, at 1:02 PM, Götz Reinicke wrote:
> Miguel Medalha schrieb:
>>> what is your purpose with this Level? I'm asking because I had
>>> done some
>>> raid level tests some time ago with hardware raid controllers/
>>> systems
>>> from 3ware, sun and iscsi-raidsystems and some softwar
Miguel Medalha schrieb:
>> what is your purpose with this Level? I'm asking because I had done some
>> raid level tests some time ago with hardware raid controllers/systems
>> from 3ware, sun and iscsi-raidsystems and some softwareraid setups.
>>
>
> The purpose of using RAID 10 is, of course
> what is your purpose with this Level? I'm asking because I had done some
> raid level tests some time ago with hardware raid controllers/systems
> from 3ware, sun and iscsi-raidsystems and some softwareraid setups.
>
The purpose of using RAID 10 is, of course, performance coupled with
ful
Rudi Ahlers schrieb:
> Hi,
>
> Can someone please assist met with some software RAID 1+0 setup
> instructions? I have searched the web, but couldn't find any. I found
> a lot of RAID 10 setup instructions, but it doesn't help me.
>
Hi,
what is your purpose with this Level? I'm asking because I h
> Can someone please assist met with some software RAID 1+0 setup
> instructions? I have searched the web, but couldn't find any. I found
> a lot of RAID 10 setup instructions, but it doesn't help me.
>
As Oliver Ransom replied to you, RAID 1+0 (not to be confused with RAID
0+1) is RAID 10. m
On 31/08/2009, at 1:18 AM, Rudi Ahlers wrote:
> Hi,
>
> Can someone please assist met with some software RAID 1+0 setup
> instructions? I have searched the web, but couldn't find any. I found
> a lot of RAID 10 setup instructions, but it doesn't help me.
Hi Rudi
RAID 10 and RAID 1+0 are the same
Hi,
Can someone please assist met with some software RAID 1+0 setup
instructions? I have searched the web, but couldn't find any. I found
a lot of RAID 10 setup instructions, but it doesn't help me.
--
Kind Regards
Rudi Ahlers
CEO, SoftDux Hosting
Web: http://www.SoftDux.com
Office: 087 805 9573
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