vmug boston - building a vmware network for nfs storage
TRANSCRIPT
Who is Chris Wahl? • VMware Certified Design Expert (VCDX) #104 ▫ Data Center and Network Virtualization
• Tech, Lab, Certs, Reviews, Videos ▫ WahlNetwork.com
• CCNA Data Center & vCloud Courses ▫ Pluralsight.com
• Virtualization User Podcast as a Service ▫ VUPaaS.com
Networking for VMware Administrators Paperback, Kindle, eBook, EPUB, MOBI, PDF 100% of my profits go to Alzheimer’s Association
Social Media
What is a Network File System? A combination of animal, vegetable, and mineral
A Protocol NFS Client
NFS Server
File System (EXT, FAT, ZFS, NTFS)
IP
A Protocol Client Daemon
Server Daemon
Shared Folder(s)
IP
Remote Procedure Calls (RPC)
IP
Procedures create commit read write remove rename
NFS Datastore
Datastore VM Files
UUID
ESXi Host ESXi Host ESXi Host
IP or DNS Path
Virtual Machine Perspective
VMware vSCSI Controller
VMware Virtual Disk Device
NFS Support
NFS Support Caveats • NFS within Guest OS • NFS as Back-End Protocol (vSphere) ▫ Exchange is Fussy
NFS Versions
NFS 4.1
Block, File, and Object Why should we care?
Hypervisors Break Block Storage • The “IO Blender” • Remediation Tricks ▫ vSphere APIs for Array Integration (VAAI) ▫ Atomic Test and Set (ATS) ▫ Virtual Volumes
• OS & Apps Don’t Speak Block
Pre-Virtualization Server Server Server
LUN LUN LUN
Storage Array
LUN
Post-Virtualization (Block) Server Server Server
Blocks Blocks Blocks
Hypervisor
Storage Array
Volume
Post-Virtualization (File) Server Server Server
Files Files Files
Hypervisor
Storage Array
Network Design Building castles in the sky
Routing Table
Default Gateway 10.10.10.1 /24
Routing Choices
10.10.10.10 /24 20.20.20.20 /24 30.30.30.30 /24
vmk0 vmk1 vmk2
Routing Table
Data Network
10.10.10.50? 20.20.20.50? 40.40.40.50?
Building an IP Storage Network
IP Storage Port Group Active / Active Uplinks
vmnic1 vmnic2
IP Storage Network 30.30.30.0 /24
vmk1 30.30.30.50 /24
Building an IP Storage Network
IP Storage Port Group Active / Active Uplinks
vmnic1 vmnic2
IP Storage Network 30.30.30.0 /24
vmk1 30.30.30.50 /24
Building an IP Storage Network
IP Storage Port Group Active / Active Uplinks
vmnic1 vmnic2
IP Storage Network 30.30.30.0 /24
vmk1 30.30.30.50 /24
Hash Algorithm • Source and Destination Variation ▫ MAC Address (Layer 2) ▫ IP Address (Layer 3) ▫ Port (Layer 4) ▫ VLAN ID
Hash Results • Changes? ▫ IP Address ▫ MAC Address ▫ Port Number ▫ VLAN ID
• Nope ▫ Same hash results
vmnic1 vmnic2
Storage Target 30.30.30.60 /24
vmk1 30.30.30.50 /24
Multiple Uplinks with IO • Two Methods Available ▫ Link Aggregation + Virtual IPs ▫ Multiple VLANs + Virtual IPs
• Virtual IPs (VIPs) ▫ Storage Array Support Required ▫ Occasionally “Virtual Interfaces (VIFs)”
Least Significant Bit (Not Magic) 2 Uplinks
– Last bit
– 0,1
3 to 4 Uplinks
– Last 2 bits
– 00, 01, 10, 11
5 to 8 Uplinks
– Last 3 bits
– 000,001,010,etc
Link Aggregation Framework • Binary 0 ▫ vmnic1
• Binary 1 ▫ vmnic2
• Single Volume ▫ (Double Mount)
vmnic1 vmnic2
VIP-1 30.30.30.60 /24
vmk1 30.30.30.50 /24
VIP-2 30.30.30.61 /24
Datastore1 Datastore2 Volume1
Link Aggregation Framework • Binary 0 ▫ vmnic1
• Binary 1 ▫ vmnic2
• Two Volumes ▫ Unique mounts
vmnic1 vmnic2
VIP-1 30.30.30.60 /24
vmk1 30.30.30.50 /24
VIP-2 30.30.30.61 /24
Datastore1 Datastore2 Volume1 Volume2
Multiple VLAN Framework • VLAN 30 ▫ vmnic1
• VLAN 40 ▫ vmnic2
vmnic1 vmnic2
VIP-1 30.30.30.60 /24
VIP-2 40.40.40.60 /24
Datastore1 Datastore2 Volume1
vmk2 40.40.40.50 /24
vmk1 30.30.30.50 /24
Multiple VLAN Framework • VLAN 30 ▫ vmnic1
• VLAN 40 ▫ vmnic2
vmnic1 vmnic2
VIP-1 30.30.30.60 /24
VIP-2 40.40.40.60 /24
Datastore1 Datastore2
vmk2 40.40.40.50 /24
vmk1 30.30.30.50 /24
Volume1 Volume2
IP Storage Tips • Dedicated VMK(s) • Dedicated VLAN(s) • Avoid Routing • iSCSI VMK Binding
The End?
Let’s connect @ChrisWahl WahlNetwork.com Pluralsight.com YouTube.com/WahlNetwork