geekon with ron #5: storage deep dive with special guest
DESCRIPTION
In this GeekOn with Ron session, Ron Oglesby invites Ed Lee of Tintri to go deep on storage including discussions on IOPS, rotating disk, SSD, RAID, hybrid arrays, and more.TRANSCRIPT
GeekOn Discussion:Understanding Storage
and VDIRon Oglesby @ronoglesby #GeekOn
Copyright © 2010 Unidesk Corporation. All Rights Reserved. www.unidesk.com
Special Guest for this GeekOn!Ed Lee, Lead Architect at TintriMost recently, Ed was Principal Systems Architect at
Data Domain, and a key contributor to the first and subsequent releases of Data Domain’s file system. He was responsible for innovations like the BOOST deduplication protocol and replication. Prior to Data Domain, Ed was at Zambeel and Compaq Systems Research Center. He has a Ph.D. from UC Berkeley in Computer Science, where he was an original member of the Berkeley RAID team.
AgendaWhy storage became so important to VDICommon desktop disk use characteristics/abilities IO and throughput performance on various types of
storageHow RAID configurations impact performanceHybrid Arrays
Copyright © 2010 Unidesk Corporation. All Rights Reserved. www.unidesk.com
From Project Virtual Reality Check Phase III:
Typical Desktop Profile (workload)
Copyright © 2010 Unidesk Corporation. All Rights Reserved. www.unidesk.com
Start w/ a Typical Desktop Profile (Logon)From Project Virtual Reality Check Phase III:
Copyright © 2010 Unidesk Corporation. All Rights Reserved. www.unidesk.com
Now we need understand disk capabilities
Rotating disk 7.2k, 10K, 15kThe basics of SSD
SLC, eMLC, MLC, TLC, etcVery High IOPsEnduranceExpensive per GB
Copyright © 2010 Unidesk Corporation. All Rights Reserved. www.unidesk.com
Why is storage so important to VDI?Examples: (Modify for login numbers)
Take those 5 ,10, 15 IOPs per desktops and multiply x 75 or 1000…..
75 Desktops on a single server? 1000 Desktops on a single array?
So if you require 750 (raw) IOPs on a server how many rotating disks required?
Reliability, Manageability and Scalability
Copyright © 2010 Unidesk Corporation. All Rights Reserved. www.unidesk.com
How do controllers and RAID impact IO
CacheRAID levelBlock sizeFilesystem
Log structured file system
Copyright © 2010 Unidesk Corporation. All Rights Reserved. www.unidesk.com
Hybrid Arrays
Basic explanation of the modelDisk based hybrid-arraysFlash based hybrid-arrays
Key questions to ask of any Hybrid vendor
Storage IO Example for 1,000 VMs
VMware View Planner Lab Results 1,000 VMs
4 Dell R720 ESXi hosts 2 x Intel Xeon E5-2690
(2.9Ghz)
256GB RAM
2 x 1 GbE Ethernet adapters
2 x 10 GbE Ethernet adapters
Tintri VMstore T540 2.4 TB raw MLC SSD
26 TB raw 5.4K SATA disks
Open Q&A