Downloaded 42 times
More Related Content
Similar to VMware Virtual SAN slideshow
VMware Virtual SAN slideshow
- 1.
- 2. Virtual SAN Overview •Virtual SAN is built right into the ESXi hypervisor. • No virtual appliance or agents to install or setup. • RAIN (Redundant Array of Independent Nodes) Architecture • Essentially RAID-5 by default with server nodes. • Easy Setup and Configuration • Configuration can be setup in mins without agents or additional software. • Uses storage profiles on a per VM/VMDK level • Can be managed at a VMDK level. 2
- 3.
- 4. Host Requirements • Minimumof 3x ESXi 5.5 hosts required • Maximum of 32 ESXi hosts • NOT all hosts have to have storage to contribute to the VSAN cluster. • Additional Virtual SAN License Required (Not included in Ent.+) • Two Licensing Tiers with or without Data Protection 4
- 5. Network Requirements • Needsa dedicated Layer-2 network • VLAN logical isolation should work • Multicast must be enabled (IGMP Snooping) • Requires additional dedicated 10Gbps links 5
- 6. Storage Requirements • TypicalSAS or SATA RAID or non-RAID HBA or controller • What is the total needed capacity of the datastore? • Specifically Virtual Machine Files (VMDK, SWAP, Snapshots, etc…) 6
- 7. Storage Constraints • DiskGroups: • 1x SSD and 1x disk minimum per disk group • 1x SSD and 7x disks maximum per disk group • No More than 5 disk groups per host • SSD Devices: • Does NOT contribute to the usable capacity of the clustered datastore • Only used for the READ caching and WRITE buffering • By default, 70% is allocated for READ caching, 30% for WRITE buffering • Magnetic/Spinning Disks: • Contributes to the usable capacity of the clustered datastore 7
- 8. How Virtual SANScales • Storage Capacity: • Add more disks to the disk group (Scale Up) – Minimal • Add more disk groups (Scale Up) – Moderate • Add more hosts to the cluster (Scale Out) – Optimal • Storage Performance: • Add more disks to the disk group (Scale Up) – Minimal • Add more disk groups (Scale Up) – Moderate • Add more hosts to the cluster (Scale Out) – Optimal 8
- 9. Virtual SAN ScaleExample 9 Now Supports up to 32 Hosts!!!
- 10. Virtual SAN Limitations •Virtual disks must be < 2-512b TB in size • Does not support Fault Tolerance, DPM, or SIOC • Datastore heartbeats are disabled on VSAN datastores • Disks that participate in the VSAN storage are fully allocated for only VSAN • 100 VMs per Host or 3200 VMs (or 2048 for HA protected) per cluster • Hosts with 512GB+ RAM require ESXi to be installed on a magnetic disk 10
- 11. Virtual SAN BestPractices • Uses typical HBA/disk controller (do NOT use RAID, setup in pass- through) • Multiple 10Gbps network connectivity for failover (redundancy) • The use of jumbo frames on the Virtual SAN network • SSD to disks ratio of a minimum of 1:10 or greater • To increase performance add more disk groups • Install ESXi on a USB/SD device and use the ESXi Dump Collector service • Uniform HW configs help avoid variations in perf and reduces complexities • Use 4x hosts minimum to allow proper protection during maintenance 11
- 12. Virtual SAN NodeCosts Hardware: Dell R920 Host - $120,000 •4x Intel Xeon E7-8891 v2 Processor 3.2GHz •1TB of RAM (32x LRDIMM 1600 MT/s Low Volt Quad Rank) •2x FusionIO ioDrive2 3TB MLC PCIe •2x Intel X520 DP 10Gbps NICs •1x Intel Ethernet I350 QP 1Gb Network Software: •VMware ESXi 5.5 Enterprise Plus - $4,000 •VMware Virtual SAN license w/Data Protection - $12,000 Approx. $136,000 /each node*(assuming network gear is already provided) 12
- 13. Virtual SAN References •Virtual SAN: Scaling Storage Capacity • Virtual SAN: Design and Sizing Guide • Virtual SAN: Sizing Tool • Virtual SAN: FusionIO Reference Architecture - FusionIO • Virtual SAN: Duncan Epping’s Virtual SAN Links • Virtual SAN: VMware Feature Walkthrough • vSphere 5.5 Documentation: Working with Virtual SAN • VMworld 2013: Session STO5391 - VMware Virtual SAN (VSAN) 13