VMware Virtual SAN slideshow
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Transcript of VMware Virtual SAN slideshow
![Page 1: VMware Virtual SAN slideshow](https://reader030.fdocuments.in/reader030/viewer/2022032616/55a673be1a28ab593c8b4652/html5/thumbnails/1.jpg)
Virtual SAN
![Page 2: VMware Virtual SAN slideshow](https://reader030.fdocuments.in/reader030/viewer/2022032616/55a673be1a28ab593c8b4652/html5/thumbnails/2.jpg)
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
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VSAN Example Diagram
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Host Requirements
• Minimum of 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
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Network Requirements
• Needs a dedicated Layer-2 network• VLAN logical isolation should work
• Multicast must be enabled (IGMP Snooping)
• Requires additional dedicated 10Gbps links
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Storage Requirements
• Typical SAS 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…)
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Storage Constraints
• Disk Groups:• 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
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How Virtual SAN Scales
• 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
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Virtual SAN Scale Example
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Now Supports up
to 32 Hosts!!!
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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
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Virtual SAN Best Practices
• 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
maintenance11
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Virtual SAN Node Costs
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
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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)
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