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Community Forum > Installation & Setup Questions

Post any question you may have on getting QuantaStor installed here.

February 13, 2010 | Registered CommenterSteve

Hi Steve,

Could you please explain the different partitioning options at install time?
In case the hardware supports raid, what would you reccomend?
In a production system, how can we deal with the ups when the utility power goes down?
In case I have a server with several nics, would you use one of them just for maintenance (web and ssh)?
In case we prettend to add two or more nics, Can you explain configuration for cisco and hp procurve switches?

Thanks

September 1, 2010 | Unregistered CommenterMikel

Hi Mikel,

There are a couple of partitioning options for the system boot disk at install time. The first is simple partitioning where the whole disk is utilized and auto partitioned using a basic partitioning scheme. This works for the majority of configurations but in some cases you'll want or need to have the system disk mirrored or you may have a large system disk that you only want QuantaStor to use a piece of, and in such cases you'll want to choose Guided partitioning w/ LVM.

>In case the hardware supports raid, what would you recommend?

You can use hardware RAID with QuantaStor but then you'll need to configure / install the RAID vendors tools in order to get notified when a disk fails. That said HW RAID 5/6 can have better performance in some scenarios so it may be worth exploring depending on the scenario. For RAID0,1,10 you typically won't see much of a difference between HW and SW RAID.
Note also that we don't support 'fake RAID' like the nvidia RAID which comes on some workstation motherboards. 'fake RAID' requires special drivers which implement the RAID stack in software so they're not true hardware RAID and the dmraid driver that comes with Linux conflicts with our software RAID (mdadm based) so if you use HW RAID you'll want to get a real SAS/SATA RAID card from LSI, LSI 3ware, Adaptec, HighPoint, etc.

>In case I have a server with several nics, would you use one of them just for maintenance (web and ssh)?

Yes, I would use one just for maintenance if your QuantaStor system will be under consistent heavy load. Right now we don't have support for indicating which ports are dedicated for iSCSI traffic but we're going to have that fixed in a minor update release later this month. You can work around that by having your initiator connect to a specific set of target ports.

>In a production system, how can we deal with the ups when the utility power goes down?

With regard to UPS support we haven't get integrated that in yet. That said, we're built on top of Ubuntu Server so you can install the 'Network UPS Tools' or 'nut' package which you can find more information about here: http://www.networkupstools.org/doc/
In the UPS shutdown script you would just call out to the QuantaStor command line tool to bring the system down cleanly:

/opt/osnexus/quantastor/bin/qs system-shutdown


>In case we prettend to add two or more nics, Can you explain configuration for cisco and hp procurve switches?

If you have multiple NICs you can bond them together to improve performance by creating a 'virtual port'. QuantaStor supports up to 4 virtual ports so as an example, if you had 16 physical NIC ports you could bond them into 4 separate virtual ports each containing 4 NICs.

There's not much to do at the switch layer unless you want to do bandwidth adjustments via QoS features or create VPNs to segregate traffic. Most switches auto-detect when you switch to jumbo frames so it's mostly an initiator side configuration setting. We recently did some testing for a customer that needed to bandwidth limit a 10GbE connection so we recommended throttling that back using the QoS setting in the DLink DGS3627 switch which is a snap. Right now we don't have alias support so you cannot assign multiple IP addresses to a virtual port so there are some limitations there.

Best,
-Steve

September 2, 2010 | Registered CommenterSteve

>In case I have a server with several nics, would you use one of them just for maintenance (web and ssh)?

We how have support for enabling / disabling iSCSI access on NICs so that you can designate specific ports for maintenance/management access. If you're running any 1.1 version you can upgrade your existing installation to 1.1.0.1580 using the apt-get utility like so:

sudo apt-get update
sudo apt-get install qstormanager qstorservice

September 3, 2010 | Registered CommenterSteve

The latest 1.3.1 release has expanded support for partitioning during the installation process. Previously we had tried to automate too much which would result in the installer getting into a dead-end loop in some conditions.. which was very frustrating indeed. You can pickup v1.3.1 from the downloads section or you can upgrade your existing system using the standard update process noted above.

November 13, 2010 | Registered CommenterSteve