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Beyond the File System Designing Large Scale File Storage and Serving Cal Henderson
Hello!
Big file systems? ,[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],1
[object Object],[object Object],2
[object Object],[object Object],3
Four buckets Storage Serving BCP Cost
Storage
The storage stack File system Block protocol RAID Hardware ext, reiserFS, NTFS SCSI, SATA, FC Mirrors, Stripes Disks and stuff File protocol NFS, CIFS, SMB
Hardware overview ,[object Object],NAS SAN DAS Internal Higher Lower
Internal storage ,[object Object],[object Object],[object Object],[object Object]
DAS Direct attached storage Disk shelf, connected by SCSI/SATA HP MSA30 – 14 disks in 3U
SAN ,[object Object],[object Object],[object Object],[object Object],[object Object]
NAS ,[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object]
Meet the LUN ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
NAS vs SAN ,[object Object],[object Object],[object Object]
SAN Advantages ,[object Object],[object Object],[object Object],[object Object]
Some Practical Examples ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
NetApp Filers Heads and shelves, up to 500TB in 6 Cabs FC SAN with 1 or 2 NAS heads
Isilon IQ ,[object Object],[object Object]
Scaling ,[object Object]
Vertical scaling ,[object Object],[object Object],[object Object],[object Object]
Horizontal scaling ,[object Object],[object Object],[object Object],[object Object]
Storage scaling approaches ,[object Object],[object Object],[object Object],[object Object],[object Object]
Huge FS ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Huge FS ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Physical nodes ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Physical Nodes ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Virtual nodes ,[object Object],[object Object],[object Object],[object Object],[object Object]
Virtual Nodes ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Chunked space ,[object Object],[object Object],[object Object],[object Object]
Chunked space ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Real Life Case Studies
GFS – Google File System ,[object Object],[object Object],[object Object],[object Object]
GFS – Google File System ,[object Object],[object Object],[object Object],[object Object],[object Object]
GFS – Google File System 1(a) 2(a) 1(b) Master
GFS – Google File System ,[object Object],[object Object],[object Object],[object Object],[object Object]
GFS – Google File System ,[object Object],[object Object],[object Object]
MogileFS – OMG Files ,[object Object],[object Object],[object Object]
MogileFS – OMG Files ,[object Object],[object Object],[object Object],[object Object]
MogileFS – OMG Files Tracker Tracker MySQL
MogileFS – OMG Files ,[object Object],[object Object],[object Object]
Flickr File System ,[object Object],[object Object],[object Object]
Flickr File System ,[object Object],[object Object],[object Object],[object Object]
Flickr File System SM SM SM
Flickr File System ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Flickr File System ,[object Object],[object Object]
Amazon S3 ,[object Object],[object Object],[object Object],[object Object]
Amazon S3 Servers Amazon
Amazon S3 Servers Amazon Users
The cost ,[object Object],[object Object],[object Object]
The cost S3
The cost S3 Regular Bandwidth
End costs ,[object Object],[object Object],[object Object]
Serving
Serving files ,[object Object],Apache Disk
Serving files ,[object Object],Apache Disk Apache Disk Apache Disk
Serving files ,[object Object],[object Object],[object Object],[object Object]
Caching ,[object Object],[object Object],[object Object],[object Object]
Why it works ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Two models ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Replacement policies ,[object Object],[object Object],[object Object],[object Object],[object Object]
Cache Churn ,[object Object],[object Object],[object Object],[object Object]
Problems ,[object Object],[object Object],[object Object],[object Object]
CDN – Content Delivery Network ,[object Object],[object Object],[object Object],[object Object],[object Object]
Edge networks Origin
Edge networks Origin Cache Cache Cache Cache Cache Cache Cache Cache
CDN Models ,[object Object],[object Object],[object Object],[object Object]
CDN Invalidation ,[object Object],[object Object],[object Object],[object Object],[object Object]
Versioning ,[object Object],[object Object],[object Object]
Cache Invalidation ,[object Object],[object Object],[object Object],[object Object],[object Object]
Cache versioning ,[object Object],[object Object],[object Object]
Virtual versioning ,[object Object],[object Object],[object Object],[object Object],Version 3 example.com/foo_3.jpg Cached: foo_3.jpg foo_3.jpg -> foo.jpg
Authentication ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Auth layer ,[object Object],[object Object],Cache Authenticator Origin
Auth sideline ,[object Object],[object Object],Cache Authenticator Origin
Auth by URL ,[object Object],[object Object],Cache Origin Web Server
BCP
Business Continuity Planning ,[object Object],[object Object],[object Object],[object Object]
Reality ,[object Object],[object Object],[object Object]
Reality ,[object Object],[object Object],[object Object],[object Object],[object Object]
Failure scenarios ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Reliable by design ,[object Object],[object Object],[object Object]
Tend to all points in the stack ,[object Object],[object Object],[object Object]
Recovery times ,[object Object],[object Object],[object Object],[object Object],[object Object]
Reliable Reads & Writes ,[object Object],[object Object],[object Object],[object Object],[object Object]
Dual writes ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Cost
Judging cost ,[object Object],[object Object],[object Object],[object Object]
Hardware costs Cost of hardware Usable GB Single Cost
Power costs Cost of power per year Usable GB Recurring Cost
Power costs Power installation cost Usable GB Single Cost
Space costs Cost per U Usable GB [ ] U’s needed (inc network) x Recurring Cost
Network costs Cost of network gear Usable GB Single Cost
Misc costs Support contracts + spare disks Usable GB + bus adaptors + cables [ ] Single & Recurring Costs
Human costs Admin cost per node Node count x Recurring Cost Usable GB [ ]
TCO ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
(fin)
Photo credits ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object]

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