Server side caching Vs other alternatives
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Virtunet Systems provides a software-only performance tier called VirtuCache that caches frequently used data from any SAN-based storage appliance onto SSDs located within the host server. This increases application performance, allows more VMs per host, and postpones the need for SAN upgrades. Compared to upgrading the SAN or storage appliance, VirtuCache provides lower latency by placing SSDs closer to the CPU and is more affordable since it uses retail SSDs rather than proprietary, vendor-locked SSDs.
Server side caching Vs other alternatives
- 2. Virtunet Systems Elevator Pitch What We Do – Server Side Performance Tier for Existing SAN – Software Only How Our Customers Benefit – Increases Application Performance – Increases number of VMs per Host – Pushes out SAN upgrades Status of Company – 3 year old
- 3. VirtuCache • Accelerate Storage Performance from ANY SAN based Storage Appliance by Caching frequently used data to in- host SSD. • 10 Minute Install • Kernel Only Software –No Dependency on Guest VMs –Low latency –Easy to Manage • No Downtime
- 4. 4 VirtuCache - Features ● Accelerates Reads + Writes ● Clusters SSDs across Hosts ● Mirrors Writes across Hosts ● Supports VMware Advanced Features – DRS, Linked Clones, Snapshots, HA
- 5. Us vs. SAN and Appliance Upgrade SAN and Storage Appliance Upgrade Virtunet Higher Latency • SSDs behind Controller and Network • Only 2 Controllers (CPUs) involved in Caching Lower Latency • SSD closer to CPU • Each VMware Host CPU involved in Caching Throw Away Older SAN and Storage Appliance Keep Existing SAN and Storage Appliance H/W Vendor Lock-In – SSDs bought from Storage Vendor No Vendor Lock-In – SSDs bought Retail Needs Downtime No Reboot Even. Expensive • Storage Vendor SSDs cost $20-40/GB • HBA and SAN Switch Upgrade Reqd • Storage Appliance Needs Replacing Affordable • Same SSD costs $1-3/GB retail. • Reduce Network Burden. No SAN Upgrade • Cost of Entry = Lic Fees + SSD for One Host
- 6. Comparison Versus Nimble and Pure Storage (Assuming 5 Hosts Sharing One Storage Appliance) Parameter Hybrid Arrays (Nimble) All Flash Array (Pure) Virtunet Nimble Cx4, 36TB Raw, 1.6 TB SSD FA-405, 4 TB Raw SSD 5 Hosts, 1 TB Enterprise SATA SSD in each Host Cost $ 75K 125K $ 25 K for License for 5 hosts + $ 5 K for 5 x 1 TB SSD Total IOPS 50K 100K 250 K $/IOPS $ 1.5/IOPS $ 1.25/IOPS 12 cents /IOPS Cost of Entry $ 75K $ 125K $ 6 K for One Host (inc.SSD) TB of SSD Provided 1.6 TB 4 TB 5 TB Cost of Additional SSD $15-30/GB $ 30/GB $ 1 /GB (retail price on amazon)
- 7. 7 Summary 1 : Separation of Capacity and Performance ● Capacity ●Best Done with Centralized Storage ● Performance ●Best Done Closest to the CPU
- 8. Summary 2 : Cheap and Lower Latency than Alternative ● In-server SSD is cheaper than Storage Appliance side SSD. ●Deployment of SSD inside the Server is architecturally superior than in the Storage Appliance since its closer to the CPU.