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RE: [Xen-users] My future plan

  • To: "Jonathan Tripathy" <jonnyt@xxxxxxxxxxx>,<Xen-users@xxxxxxxxxxxxxxxxxxx>
  • From: "Robert Dunkley" <Robert@xxxxxxxxx>
  • Date: Tue, 8 Jun 2010 15:36:16 +0100
  • Cc:
  • Delivery-date: Tue, 08 Jun 2010 07:38:32 -0700
  • List-id: Xen user discussion <xen-users.lists.xensource.com>
  • Thread-index: AcsHCes2uM5QaNuCTjC2th1DBTX8rwADQycQ
  • Thread-topic: [Xen-users] My future plan


Hi Jonathan,



Might be worth considering a different raid card, even with simple raid 1 I did not get proper raid 1 random read interleaving performance with an LSI 1068 based controller (Assuming the 1078 is very similar), an IOP based Areca card behaved properly (Only 30% improvement over single drive with LSI but 80% better with Areca, simple Bonnie testing). I was using Centos 5.2 at the time (Integrated drivers).


If you are feeling brave maybe a PXE boot could work to save the need for any system drives on the nodes.





From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Jonathan Tripathy
Sent: 08 June 2010 13:56
To: Xen-users@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-users] My future plan


My future plan currently looks like this for my VPS hosting solution, so any feedback would be appreciated:


Each Node:

Dell R210 Intel X3430 Quad Core 8GB RAM

Intel PT 1Gbps Server Dual Port NIC using linux "bonding"

Small pair of HDDs for OS (Probably in RAID1)

Each node will run about 10 - 15 customer guests



Storage Server:

Some Intel Quad Core Chip

2GB RAM (Maybe more?)

LSI 8704EM2 RAID Controller (Think this controller does 3 Gbps)

Battery backup for the above RAID controller

4 X RAID10 Arrays (4 X 1.5TB disks per array, 16 disks in total)

Each RAID10 array will connect to 2 nodes (8 nodes per storage server)

Intel PT 1Gbps Quad port NIC using Linux bonding

Exposes 8 X 1.5GB iSCSI targets (each node will use one of these)


HP Procurve 1800-24G switch to create 1 X 4 port trunk (for storage server), and 8 X 2 port trunk (for the nodes)


What you think? Any tips?




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