Thanks Shankar! But please enlighten me as to whether you have seen or heard of people using "Shared" primary storage for traditional Windows workloads? Or people prefer to use Local Disk for such use cases? I mean when we use these windows applications our cloud cannot even sustain 5 to 10 users using those applications (these could be email accounts or Lync accounts..)
I mean 1 GigE link cannot match the speed of a enterprise SAS HDD, (a 72K rpm disk could have 6Gbps speed). Any thoughts? On Wed, Nov 13, 2013 at 5:24 PM, Shanker Balan <shanker.ba...@shapeblue.com>wrote: > Hi Junaid, > > On 13-Nov-2013, at 5:07 pm, Junaid Shahid <shahid.jun...@gmail.com> wrote: > > > Hi all, > > We are running a mixture of Windows and Linux VMs under different > accounts > > on our cloud, that is based on CloudPlatform 3 (I know that it's a > mailing > > list for ACS, but I still need your feedback so read on please :)). > > > > The Primary storage is based on iSCSI with GigE link, and Xen hyperviser. > > > > Now the problem is that whenever we run Windows OSes with applications > like > > Exchange, Sharepoint and particularly MS Lync (that includes AD and MSSQL > > as pre-requisites..), the GigE link to Primary Storage becomes so > congested > > that it affects the whole cloud environment. Nothing remains usable > > anymore, the performance of Linux VMs also is affected in the process. > > Add additional GigE links? :) > > > > > So what does your experience say, what should we do: > > 1) Segregate the Windows VMs to their own cluster and their own separate > > Primary storage. > > 2) Use local storage for the "pre-cloud era" traditional Windows > workloads > > such as MS Exchange etc. > > 3) Is cloud environment feasible at all for Hosted Exchange and the > like, > > as Local storage that runs on the speed of the motherboard back-plane, of > > course cannot be matched by a GigE link alone. > > > > Awaiting your valuable feedback all :) > > I would start with a capacity planning exercise and augment the network > with additional NICs etc. > > Capacity planning is a must for any kind of workload. > > Regards. > > -- > @shankerbalan > > M: +91 98860 60539 | O: +91 (80) 67935867 > shanker.ba...@shapeblue.com | www.shapeblue.com | Twitter:@shapeblue > ShapeBlue Services India LLP, 22nd floor, Unit 2201A, World Trade Centre, > Bangalore - 560 055 > > CloudStack Bootcamp Training on 27/28 November, Bangalore > http://www.shapeblue.com/cloudstack-training/ > > > > > This email and any attachments to it may be confidential and are intended > solely for the use of the individual to whom it is addressed. Any views or > opinions expressed are solely those of the author and do not necessarily > represent those of Shape Blue Ltd or related companies. If you are not the > intended recipient of this email, you must neither take any action based > upon its contents, nor copy or show it to anyone. Please contact the sender > if you believe you have received this email in error. Shape Blue Ltd is a > company incorporated in England & Wales. ShapeBlue Services India LLP is a > company incorporated in India and is operated under license from Shape Blue > Ltd. Shape Blue Brasil Consultoria Ltda is a company incorporated in Brasil > and is operated under license from Shape Blue Ltd. ShapeBlue is a > registered trademark. > -- Regards, Junaid Shahid, TODO:______
