SLIDE 1
Chameleon: Keeping data safe for the naïve and thri6y
Ansley Post and Peter Druschel MPI‐SWS
NOTE: Slides contain notes which include addiGonal informaGon for readers of the slides
ApplicaGon Scenario
- Home Users / Small Businesses
Chameleon: Keeping data safe for the nave and thri6y Ansley Post - - PowerPoint PPT Presentation
Chameleon: Keeping data safe for the nave and thri6y Ansley Post - - PowerPoint PPT Presentation
Chameleon: Keeping data safe for the nave and thri6y Ansley Post and Peter Druschel MPISWS NOTE: Slides contain notes which include addiGonal informaGon for readers of the slides ApplicaGon Scenario Home Users / Small Businesses
SLIDE 2
SLIDE 3
ApplicaGon Scenario
- Home Users / Small Businesses
Is my data safe?
SLIDE 4
ApplicaGon Scenario
- Home Users / Small Businesses
Is my data safe? What is RAID?
SLIDE 5
ApplicaGon Scenario
- Home Users / Small Businesses
Is my data safe? What is RAID? How much is this going to cost?
SLIDE 6
ApplicaGon Scenario
- Home Users / Small Businesses
Is my data safe? What is RAID? How much is this going to cost? Am I capable of managing this?
SLIDE 7
Example
SLIDE 8
Example
Many possible ways to replicate, place and encode data
SLIDE 9
Example
Many possible ways to replicate, place and encode data
SLIDE 10
Example
Many possible ways to replicate, place and encode data
SLIDE 11
Example
Many possible ways to replicate, place and encode data
SLIDE 12
Example
Many possible ways to replicate, place and encode data
SLIDE 13
Example
Many possible ways to replicate, place and encode data
SLIDE 14
Example
Many possible ways to replicate, place and encode data
SLIDE 15
Example
Many possible ways to replicate, place and encode data
SLIDE 16
Offline storage
- Ideally, data is stored on at least one offline
device
– Enables recovery from catastrophic failure
NOTE: All online copies may become corrupted due to virus, operator error, so6ware bug. Offline copies provide insurance against catastrophic failure.
SLIDE 17
Offline storage
- Ideally, data is stored on at least one offline
device
– Enables recovery from catastrophic failure
NOTE: All online copies may become corrupted due to virus, operator error, so6ware bug. Offline copies provide insurance against catastrophic failure.
SLIDE 18
AnG‐availability protocol
- Writes are only allowed if a certain number of
devices are offline
– Enforced by a small trusted kernel
NOTE: For clarity, a machine is shown as offline, but in pracGce only a storage device must be offline.
SLIDE 19
AnG‐availability protocol
- Writes are only allowed if a certain number of
devices are offline
– Enforced by a small trusted kernel
NOTE: For clarity, a machine is shown as offline, but in pracGce only a storage device must be offline.
SLIDE 20
AnG‐availability protocol
- Writes are only allowed if a certain number of
devices are offline
– Enforced by a small trusted kernel
NOTE: For clarity, a machine is shown as offline, but in pracGce only a storage device must be offline.
SLIDE 21
AnG‐availability protocol
- Writes are only allowed if a certain number of
devices are offline
– Enforced by a small trusted kernel
NOTE: For clarity, a machine is shown as offline, but in pracGce only a storage device must be offline.
SLIDE 22
AnG‐availability protocol
- Writes are only allowed if a certain number of
devices are offline
– Enforced by a small trusted kernel
NOTE: For clarity, a machine is shown as offline, but in pracGce only a storage device must be offline.
SLIDE 23
AnG‐availability protocol
- Writes are only allowed if a certain number of
devices are offline
– Enforced by a small trusted kernel
NOTE: For clarity, a machine is shown as offline, but in pracGce only a storage device must be offline.
SLIDE 24
AdapGve data storage
- Use linear programming to select and adapt
storage configuraGon
Encoding ReplicaGon Placement
NOTE: Huge number of possible tradeoffs. Well defined objecGve allows automaGc selecGon of best configuraGon.
SLIDE 25
AdapGve data storage
- Use linear programming to select and adapt
storage configuraGon
Encoding ReplicaGon Placement Offline
NOTE: Huge number of possible tradeoffs. Well defined objecGve allows automaGc selecGon of best configuraGon.
SLIDE 26
AdapGve data storage
- Use linear programming to select and adapt
storage configuraGon
Encoding ReplicaGon Placement Offline
NOTE: Huge number of possible tradeoffs. Well defined objecGve allows automaGc selecGon of best configuraGon.
SLIDE 27
Conclusion
- Currently finalizing design
- Prototype, named Chameleon, is under