ONLY 5% OF DATA IS CRITICAL AT ANY GIVEN TIME
CAN YOU KEEP UP WITH CAPACITY GROWTH?
CAN YOU AFFORDABLY MEET PERFORMANCE REQUIREMENTS?
YOU’RE MANAGING MORE AND MORE DATA
00:00:00
STORAGE QoS
MISSION-CRITICAL POLICY ENSURES WORKLOAD GETS PERFORMANCE RESOURCES
POLICY-BASED SIMPLICITY
• Addresses data’s varying business value • Enables IT to prioritize storage resources • Aligns cost of storage with data’s value
NEXGEN IO/SEC
PCIe FLASH ARCHITECTURE
• Drag-and-drop policy changes • Real-time performance monitoring • Flexibility/extensibility
• PCIe flash-centric design • More streamlined data path • PCIe and HDD scale independently
YOUR PRIORITIES AT WORK
MEET NEXGEN
HYBRID FLASH ARRAYS
• Only GBs of NVRAM to accelerate writes • NVRAM fills fast, then writes to drives
• TBs of PCIe flash accelerates every write • Only lower-priority data is written to disk
• More flash capacity
PCIe FLASH CARD (large)
• Destage to HDD and SSD via disk controller(s)
Solid State Drive (SSD)
• Lower capacity and 6 or 12 Gbps throughput
• Prioritized destage to HDD via disk controllers
PCIe connects directly with 40Gbps throughput
• Scale capacity by adding disk shelves • PCIe flash capacity and performance scale independently
• More capacity and 40 Gbps throughput
ALL DATA TREATED EQUALLY NO PRIORITIZATION
SSD is an unprioritized read-cache
READS
WRITES
PCIe FLASH ARCHITECTURE
PCIe FLASH ADVANTAGES
SCALABILITY
• Less flash capacity
SATA/SAS limited to 6Gbps or 12Gbps throughputEndFragment    
• Only GBs of NVRAM • 6 or 12 Gbps total throughput
• TBs of PCIe flash  • 40 Gbps of throughput per flash card
• Rip and replace existing SSD to scale
• Add PCIe flash to existing capacity
ARCHITECTURE
LOW PRIORITY DATA ON HDD
• PCIe flash-centric design  • PCIe connection eliminates bottlenecks• No capacity/performance tradeoff
HIGH PRIORITY DATA IN FLASH
NEXGEN
• Each flash device gets its own 40Gbps PCIe slot  • Optimized performance from each card
• Disk-centric design with SSD • SAS/SATA bottlenecks limit performance • Shared SSD/HDD bays force capacity/ performance tradeoff
• Scaling flash costs you your initial SSD investment • Additional cache is still bottlenecked
CONVENTIONAL
• Flash added to dedicated slots to improve performance • Maintains value of initial flash investment
• All SSDs connect to a shared 6Gbps or 12 Gbps controller • Bottleneck limits flash effectiveness and scalability
POLICIES
ALL-FLASH ARRAY
MISSION CRITICAL
Non-Critical
MEDIUM PRIORITY
Infrastructure VMs / Messaging
BUSINESS CRITICAL
• Make policy changes on the fly • Changes take place immediately
LATENCY - MILLISECONDS
NON-CRITICAL
Policy 01
HIGH PRIORITY
Policy 02
Policy 03
LOW PRIORITY
LOW PRIORITY WORKLOADS CAN IMPACT HIGHER PRIORITY ONES
• QoS prioritizes workloads  • Simple policy based management• Delivers consistent performance
Essential but less critical E.g., Business Intelligence VM NexGen calls this Business Critical data
Policy 04
• No workload prioritization • Resource contention • Inconsistent performance
!
HIGH PRIORITY
QoS ENSURES NON-CRITICAL WORKLOADS DO NOT IMPACT HIGHER PRIORITY ONES
NOT ALL DATA IS EQUAL
Order Processing Database and Website
HIGH PRIORITY WORKLOAD MUST CONTEND FOR RESOURCES
Call Center VDI
High threshold for latency E.g., File share NexGen calls this Non-Critical data
Essential to business success E.g., Financial transaction processing NexGen calls this Mission Critical data
File Archive
NORMAL - NO RESOURCE CONTENTION
5 ROBUST POLICIES
WHAT IF HIGH-PRIORITY AND LOW-PRIORITY NEEDS CONFLICT?
Policy 05
7.2K HDD
NEXGEN QoS POLICY CHANGE
Sharepoint
Business Critical
Mission Critical
WHAT IF YOUR LOW PRIORITY WORKLOADS SPIKE?
IO/SEC
• Manage VVols with NexGen QoS policy • Policy changes take place immediately
15K HDD
• NexGen provides QoS functionality to VVols • Consistent app AND VM performance; no I/O blender
NEW VMWARE VIRTUAL VOLUMES (VVols)
• Data is siloed based on business priority • VM migration with Storage vMotion can take hours or days
CONVENTIONAL IO/SEC
NO WAY TO PRIORITIZE PERFORMANCE
PERFORMANCE PRIORITIZED BY STORAGE QoS 
STORAGE QoS
• Robust system monitoring • Easy to assign and change policies• Flexibility/extensibility
MULTIPLE INTERFACES
PLUGINS
SUPPORT
• Browser-based GUI or CLI • CLI for Windows and Linux
• VMware vSphere Plugin • NexGen QoS Manager for vCenter
• Real-time monitoring by VM, system, volume, etc. • Enables real-time performance decision
• Single support contract • Support costs won’t increase as you scale
FLEXIBLE AND EXTENSIBLE
MONITORING
POLICY-BASED SIMPLICITY
QoS POLICY CHANGES ARE IMMEDIATE
IO/SEC
PCIe FLASH ARCHITECTURE
POLICY-BASED SIMPLICITY
PCIe Flash Card (large)
PCIe Flash Card (small)
Disk Controller
Hard Disk Drive (HDD)
READ CACHE
is prioritized
READ & WRITE AREA
for all writes and specific reads
Disk controller
READ CACHE
HD
SSD
1
2
3
StartFragment5 EndFragment
Policy 01
StartFragmentIOPS Target (IO/sec)
StartFragment100000 EndFragment
StartFragmentBandwidth Target (MB/sec)
StartFragment750 EndFragment
Latency Target(ms)
Name
Policy 05
2000
StartFragment37.5 EndFragment
StartFragment100 EndFragment
StartFragment375 EndFragment
50000
10
Policy 02
Policy 03
StartFragment25 EndFragment
StartFragment150 EndFragment
StartFragment20000 EndFragment
StartFragment50 EndFragment
Policy 04
StartFragment10000
StartFragment75 EndFragment
    START DEMO
Small write buffer