Shared nothing migration issues (2012)

-

i'm checking out new features of 2012 , have 2 standalone servers (not clustered) attached own storage (10gb iscsi). i've got dedicated live migration network between 2 servers (10gb). created dummy vm on server #1 few vhds. shared nothing working have questions if setup correct, based on what's going on.

issue #1 - migration seems take long time , isn't using available bandwidth. have 10gb everywhere data moving through systems @ between 800mb - 1.5gb throughout whole process. have great tier1 san (ssds, 15k sas) our sandbox, know source , destination storage aren't stressed. data path looks comes off storagea via iscsi server1, travels on migration network server2, , pushed out storageb via iscsi.

what holdup? why isn't moving faster , using more of 10gb links?  my thought since shared nothing using smb 3.0, maybe smb throttling things? 

issue #2 - possibly related i'm not sure. have multiple vhds on vm (one per lun simplicity).  in perfmon watch migration happen, vhds moving 1 @ time. destination machine writes first lun (with no activity on others), upon completion starts writing next lun, , on.

is limited 1 disk copy @ time? can not parallel copies during shared nothing migration?

i'm checking out new features of 2012 , have 2 standalone servers (not clustered) attached own storage (10gb iscsi). i've got dedicated live migration network between 2 servers (10gb). created dummy vm on server #1 few vhds. shared nothing working have questions if setup correct, based on what's going on.

issue #1 - migration seems take long time , isn't using available bandwidth. have 10gb everywhere data moving through systems @ between 800mb - 1.5gb throughout whole process. have great tier1 san (ssds, 15k sas) our sandbox, know source , destination storage aren't stressed. data path looks comes off storagea via iscsi server1, travels on migration network server2, , pushed out storageb via iscsi.

what holdup? why isn't moving faster , using more of 10gb links?  my thought since shared nothing using smb 3.0, maybe smb throttling things? 

issue #2 - possibly related i'm not sure. have multiple vhds on vm (one per lun simplicity).  in perfmon watch migration happen, vhds moving 1 @ time. destination machine writes first lun (with no activity on others), upon completion starts writing next lun, , on.

is limited 1 disk copy @ time? can not parallel copies during shared nothing migration?

1) shared nothing live migration indeed uses smb 3.0 , it's not possible use available bandwidth smb (at least i've never seen this). can - try enable smb 3.0 related performance optimization features (smb multichannel, smb direct, teaming etc). see:

http://workinghardinit.wordpress.com/tag/shared-nothing-live-migration/

http://msdn.microsoft.com/en-us/library/windows/hardware/jj248719.aspx

http://blogs.technet.com/b/bobh/archive/2013/02/07/technet-radio-hyper-v-local-vs-hyper-v-smb-performance.aspx

http://blogs.technet.com/b/josebda/archive/2013/04/11/technet-radio-series-covers-windows-server-2012-file-server-and-smb-3-0-scenarios.aspx

2) should work. did explicitly enable multiple concurrent vm migration? see:

http://blogs.technet.com/b/canitpro/archive/2013/01/03/shared-nothing-live-migration-goodbye-shared-storage.aspx

starwind iscsi san & nas



Windows Server  >  Hyper-V



Comments

Post a Comment

Popular posts from this blog

Edit Group Policy

-
i have pc has power settings pushed out default domain policy in ad environment. of course on local machine "some settings managed system adminstrator". the machine temporarily no longer in contact domain controller (it's been physically moved , not on same network now) can't updated gpo settings. i believe if edit local group policy won't make difference because of group policy processing , precedence. since it's temporary away ad network, still want use settings of ad user. is there somewhere in registry stored can edit power plan manually until can sync domain? (i need prevent sleeping while plugged in - it's set 1 hour) thanks! allen crist i found site: http://gpsearch.azurewebsites.net/#7916 i able add policy to hkey_local_machine\software\policies\microsoft\power using specs found on site. looks solved issue. i'll report if didn't. thanks! allen crist ...
Read more

Hyper-V VM not reaching OS 'Logon' screen

-
i trying migrate vm vmware hyper-v. so far have done following (seemingly successfully): prepare vmware vm conversion hyper-v format (vhd) within vmware workstation 8.0 environment following steps guide: http://social.technet.microsoft.com/forums/en/winserverhyperv/thread/ef8c12f7-c45d-442e-9a30-c43cd87df3b3   (i.e. remove vm tools, add new ide hard disk…) use vmdk2vhd application convert individual vmdk files vhd ones create new vm in hyper-v exporting in 3 newly converted vhd files at point have checked settings , powered on vm in hyper-v find although windows begins load expected manages reach screen prior login screen saying either of following messages: “windows starting up…” “the active directory rebuilding indices… please wait” to knowledge, albeit limited in area, vm should present me login screen since appears in vmware. if start vm in safe mode can login not desired affect. below details of vm: operating system: windows server 2003 (enterprise edit...
Read more

DNS question...

-
i new setting dns server....my domain name expl. "domain.com"....i set "a" record in forward lookup for  www.domain.com itself...."server's local ip"....i've added no other zones , i seem able resolve names except own....www.domain.com.....also, do i put my isp's dns ip's....for external dns's server can't resolve?....forwarding or in nic setup?......i want setup in my dns server don't have include them on client side..... thanks mark     not put isp dsn server address in settings on nic dc or clients. should point local dns server on dc. set dns forward public dns, such isp. bill Windows Server  >  Network Infrastructure Servers
Read more