En lysande presentation av Jeff Woolsey om 2012 R2 finns här:
Introduction to Windows Server 2012 R2
De första ca 20 minuterna handlar om 2012, men det är en hel del bra saker som tas upp så jag rekommendera att kika på hela presentationen.
Jeff tar upp en del bra saker. Nedan tar jag upp vissa av sakerna han förklarar, men även en del andra saker från andra artiklar jag hittat.
Några av nyheterna i Hyper-V 2012 R2
- QoS på disk IOPS.
Det går alltså att lägga begränsningar på hur många IOPS en VM får ta på disk. Detta för att bli av med "non behaving VMs" - Support för Dynamiskt minne i LinuxJupp, det funkar även i Linux!! Man visade på Suse. Vilka olika distar som är supporterade har ja
- Shared VHDX-fileFör att bygga VMar som är medlemmar i Microsoft Cluster behövs delad lagring. Genom att använda Shared VHDX-filer så slipper man använda iSCSI eller liknande för VMarna.
- Live Resizing på VHDX filerFiler kan växa och krympa utan att stänga ned servrar. Här är det lite otydligt. Enligt vissa källor kan man låta disken krympa helt automatiskt, enligt vissa så går det bara att krympa bort opartitionerat utrymme i VHDX-filen...
Det vanligast man gör idag är att utöka diskar, men att få möjlighet att krympa diskar kan spara en massa pengar på storagesidan. - Compressed Live MigrationPrecis vad det låter som. När en Live migration startas så ser motorn till att komprimera datat innan det skickas över nätverket. Under komprimeringen kommer Hyper-V kontroller CPU-lasten så att inte övriga VMar påverkas negativt av komprimeringen.
På nätverk som har 10Gbit eller lägre ger denna funktion rejält snabbare migreringar. - Live Virtual Machine Cloning
Går att clona en maskin som är igång. Ruskigt trevligt för att bygga en testmiljö. Det hela går till så att det blir en ny maskin i Saved state. Denna maskin har stöd för GenerationID vilket i sin tur gör att man faktiskt kan ta med sina domänkontrollanter (Ej PDC emulatorn om jag minns rätt). - Tertiary Replication in the box.
En VM kan synkas från Site 1 till Site 2. Men i och med 2012 R2 kan man även synka samma VM från Site 2 till Site 3. Riktigt bra för att bygga prisvärda DR-lösningar. (så klart beroende på vilka krav man har på sin DR-lösning, men för många är detta en enormt trevlig sak, se även punktern "replication frequency" nedan) - Virtual Machine Export ImprovementsDet går att exportera ut en VM från en viss snapshot. Det måste inte vara den senaste snappen. Det kan vara en tidigare om man vill...
- Replication frequency
Går att välja 15 minuter, 5 minuter eller 30 sekunder. - Cross version, Shared-nothing Live MigrationJupp, flytta en VM från 2012 till 2012R2 utan att få nedtid. Ruskigt snyggt sätt att uppgradera en miljö. Utan att behöva starta om VMarna. :)
(tänk dock på att det är åt ena hållet, inte från 2012R2 till 2012. Bara från 2012 till 2012R2.) - Generation 2 VMsIngen BIOS, inga legacy devicer. Bara en UEFI baserad maskin. Kan köra Windows 8 eller Windows server 2012/2012R2.
- Fullständig remotedesktop support.Även när det inte finns nått nätverk. Man kommer helt enkelt åt konsollen för den virtuella maskinen genom RDP. Anslutniung sker genom VMBus interfacet och det är Hyper-V som gör anslutnignen. Så allt man behöver ha tillgång till är Hyper-V maskinen, sedan kan man se vad som händer på en maskin, även om den har tok-kraschat.
- Copy-Paste funkar mot konsolen.
Eftersom man använder RDP för att ansluta så funkar även filöverföringar, Copy-Paste och att köra redirection av diskar/USB å sånt. *häpp*
Några andra av nyheterna i Windows 2012 R2
- Storage spaces har stöd för
- Tiering av diskar. (kan "pinna" högprioritets filer till SSD om man vill).
- Data Deduplication!! (WOHOO!!!!! Som jag har önskat mig denna!! Sjukt bra!)
- Flexible Resilency (ett find ord för att säga att man kan bygga RAID på flera olika sätt. Typ bygga en spegel som speglar till 3 ställen istället för bara till två... :))
- Software-define Networking (SDN)
Ytterligare stöd för att göra detta. En av trevligheterna är en inbyggd multitennant edge gateway. Ett tidigare problem är hur kopplingen mellan de fysiska nätverken och virtuella nätverken skall göras. Här underlättas detta kraftigt. De funktioner som används är System Center VMM och Hyper-V.
(Microsoft bygger sin SDN på NVGRE) - Synkat mot releaserna av System Center produkterna.
Kanske inte så stort, men nu när det kommer uppdateringar i OSet så finns stödet även i System Center (å tvärt om). Så vi slipper strulet med 2012 hyper-v och VMM som var för ett tag sedan. :)
Så när får vi denna? Tja, slutet av året säger man.... med en Preview i slutet av juni.
Så ett halvår till får vi allt vänta. :(
Mer info:
- http://blogs.technet.com/b/canitpro/archive/2013/06/04/microsoft-announces-windows-server-2012-r2-at-teched-2013-north-america.aspx
- http://channel9.msdn.com/Events/TechEd/NorthAmerica/2013
- http://www.petri.co.il/top-virtualization-features-in-windows-server-2012-r2-hyper-v.htm
- http://www.theregister.co.uk/2013/06/03/teched_windows_server_2012_azure_hyperv/
- http://windowsitpro.com/hyper-v/top-ten-windows-server-2012-r2-hyper-v-new-features
- http://www.lifehacker.com.au/2013/06/windows-server-2012-r2-storage-doughnuts-and-directaccess/
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