Though I totally agree to your idea of going back to the drawing board and doing capacity planning for our target workload. Thanks!
On Wed, Nov 13, 2013 at 5:40 PM, Junaid Shahid <shahid.jun...@gmail.com>wrote: > 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:______ > -- Regards, Junaid Shahid, TODO:______
