Hi,
We had received a new EMC storage (Clariion CX4) and the EMC analist has told us that CentOS aren't on their support list, but RHEL are :)
Well anybody on the list has a CentOS host talking (iSCSI) with an EMC storage, preferably using the EMC Powerpath software, and can talk about you experience? Or I will need to buy some REHL licenses ?
I'll put my hands on it only next week, but I'm trying to get prepared to do it :)
Thanks in advance,
Antonio.
----- "Antonio da Silva Martins Junior" asmartins@uem.br wrote:
Hi,
We had received a new EMC storage (Clariion CX4) and the EMC analist has told us that CentOS aren't on their support list, but RHEL are :)
Well anybody on the list has a CentOS host talking (iSCSI) with an EMC storage, preferably using the EMC Powerpath software, and can talk about you experience? Or I will need to buy some REHL licenses ?
I'll put my hands on it only next week, but I'm trying to get prepared to do it :)
Thanks in advance,
Antonio.
Completely unrelated to EMC CX4 Clariion units... I feel I must bring something to your attention.
There is a huge difference between an "analist"[1] and an "analyst"[2].
Just thought you'd be interested to know...
:D
[1] http://www.urbandictionary.com/define.php?term=analist [2] http://en.wikipedia.org/wiki/Analyst
--Tim
----- "Antonio da Silva Martins Junior" asmartins@uem.br wrote:
Hi,
We had received a new EMC storage (Clariion CX4) and the EMC analist has told us that CentOS aren't on their support list, but RHEL
are :) <snip>
Completely unrelated to EMC CX4 Clariion units... I feel I must bring something to your attention.
There is a huge difference between an "analist"[1] and an "analyst"[2].
Just thought you'd be interested to know...
*chortle*
Reminds me of a sign I used to see, long time ago, in a sign store: "so-and-so, psychologist, and so-and-some, proctologist, specializing in odds and ends"
mark
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thus Antonio da Silva Martins Junior spake:
Hi,
We had received a new EMC storage (Clariion CX4) and the EMC analist has told us that CentOS aren't on their support list, but RHEL are :)
Well anybody on the list has a CentOS host talking (iSCSI) with an EMC storage, preferably using the EMC Powerpath software, and can talk about you experience? Or I will need to buy some REHL licenses ?
I'll put my hands on it only next week, but I'm trying to get prepared to do it :)
Thanks in advance,
Antonio.
Hi Antonio,
we had CX4's running already some years ago, it was first attached to some RHEL 4.x hosts, when RHEL 5.0 came, we immediately switched.
You certainly need some time to see what this is all about (we had a different animal here, it was not iSCSI, it was Fibre Channel with all Brocade bells and whistles :), but it really rocks.
HTH,
Timo
We had received a new EMC storage (Clariion CX4) and the EMC analist has told us that CentOS aren't on their support list, but RHEL are :)
I have always taken the stance that if something works with RHEL, it will work with CentOS.
Have not had a problem yet.
Neil
-- Neil Aggarwal, (281)846-8957, http://www.JAMMConsulting.com CentOS 5.4 KVM VPS $55/mo, no setup fee, no contract, dedicated 64bit CPU 1GB dedicated RAM, 40GB RAID storage, 500GB/mo premium BW, Zero downtime
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thus Neil Aggarwal spake:
We had received a new EMC storage (Clariion CX4) and the EMC analist has told us that CentOS aren't on their support list, but RHEL are :)
I have always taken the stance that if something works with RHEL, it will work with CentOS.
Have not had a problem yet.
Neil
Sure, same here (both stance and no problems), BUT:
'The vendors' that supply 'enterprise-grade hardware and software' (as EMC, Oracle etc do, e.g.) will never give you *support* for your machine, running CentOS, connected to their stuff. Mainly, it's RHEL and SuSE/Novell for GNU/Linux in enterprise environments. So, e.g., Debian is also not supported by most, if not all of these vendors -- just because of 'political' reasons, as there's no company behind it.
Timo
-- Neil Aggarwal, (281)846-8957, http://www.JAMMConsulting.com CentOS 5.4 KVM VPS $55/mo, no setup fee, no contract, dedicated 64bit CPU 1GB dedicated RAM, 40GB RAID storage, 500GB/mo premium BW, Zero downtime
'The vendors' that supply 'enterprise-grade hardware and software' (as EMC, Oracle etc do, e.g.) will never give you *support* for your machine, running CentOS, connected to their stuff.
That is a good point.
I am ready to deploy a RHEL test machine if the support people insist on that, but they will usually listen to a problem with their stuff as long as we focus on their side of things.
Neil
-- Neil Aggarwal, (281)846-8957, http://www.JAMMConsulting.com CentOS 5.4 KVM VPS $55/mo, no setup fee, no contract, dedicated 64bit CPU 1GB dedicated RAM, 40GB RAID storage, 500GB/mo premium BW, Zero downtime
----- "Neil Aggarwal" neil@JAMMConsulting.com escreveu:
We had received a new EMC storage (Clariion CX4) and the EMC analyst has told us that CentOS aren't on their support list, but RHEL are :)
I have always taken the stance that if something works with RHEL, it will work with CentOS.
Have not had a problem yet.
Humm... I think the same, and on the rare cases when I need some support from a vendor (HP, Dell, IBM, etc), when I call them I tell it's RHEL and always it had worked. Most of the time I find the solution before them :)
But, this time (I'm on vacation, will return to work next week) the analyst who came to install (well he unpack and plug the wires :D ) told one of my co-workers that it won't run. Next week I will try to install the EMC Powerpatch, or better try with dm-multipath directly.
Antonio.
Antonio da Silva Martins Junior wrote:
Well anybody on the list has a CentOS host talking (iSCSI) with an EMC storage, preferably using the EMC Powerpath software, and can talk about you experience? Or I will need to buy some REHL licenses ?
I think the issue is more the support rather than does it work.
Like others I fully expect it to work just fine(as good as EMC stuff can be expected to work), but will they help you if CentOS is not a supported distribution? Some vendors will go out of their way to give a best effort support for unsupported configurations, others will not. Some understand that CentOS is practically identical to RHEL, others have a hard line drawn that says they won't support it.
If whomever your getting support from won't support it if you have a problem then your probably best of getting a supported solution, or building a solution you could support yourself.
I would expect EMC to publish docs on how to get device mapper MPIO to work with their systems, for those that have unsupported configurations for powerpath.
Oftentimes the vendor's local SE can be a valuable support resource I lean on them a lot more than I lean on the formal support organizations as they often times have a better understanding of the particular customer environment, and the personal relationship inspires them to put an extra effort out to help to keep the customer happy.
nate
On Tuesday 27 October 2009 13:00, Antonio da Silva Martins Junior wrote:
Hi,
We had received a new EMC storage (Clariion CX4) and the EMC analist has told us that CentOS aren't on their support list, but RHEL are :)
Well anybody on the list has a CentOS host talking (iSCSI) with an EMC storage, preferably using the EMC Powerpath software, and can talk about you experience? Or I will need to buy some REHL licenses ?
I'll put my hands on it only next week, but I'm trying to get prepared to do it :)
Thanks in advance,
Stay away from powerpath, use dm-multipath. It will take some configuration, but once done smoother than power path you won't have to rpm -e && rpm -ivh powerpath with each kernel update
-
Antonio da Silva Martins Junior -
m.roth＠5-cent.us -
nate -
Neil Aggarwal -
Terry Polzin -
Tim Nelson -
Timo Schoeler