Post on 01-Jan-2016
description
An overview of replication
What is being
replicated?
• Volume
• File-based
• Database-based
How it is being
replicated?
• Asynchronously
• Synchronously
• “Timed” push or
pull
• Caching
Anatomy of a database
Tables of information
Index of tables
Transaction Log for repair in the event of failure
Cache that sits in RAM
File-based replicationFile-basedReplicator
OperatingSystem(1)
(2)
(3)
ReplicatorJournal
(2)
File-basedReplicator
OperatingSystem
(3)
(4)
Any IP based network
Assured security issues
Accountability Reporting, provisioning
Confidentiality CHAP, RADIUS
Integrity Cloning, delta changes
AvailabilitySynchronous, asynchronous, replicate-on-write,
scheduled replication
Software-based
replication
(availability)
Synch
Asy
nch
Jou
rnale
d
replica
te-o
n-w
rite
Sch
edule
d sn
apsh
ot re
plica
tion
VVM Storage Replicator Data Migrator
DoubleTake EverStor
Software-based
replication (2)
(availability)
Synch
Asy
nch
Jou
rnale
d
replica
te-o
n-w
rite
Sch
edule
d sn
apsh
ot re
plica
tion
Sun StorEdge QFS RepliStor IBM Informix
Dynamic Server
Falcon’s IPStor
Hardware-based
replication
(availability)
Synch
ron
ous
Asy
nch
ron
ous Jo
urn
ale
d
replica
te-o
n-w
rite
Sch
edule
d sn
apsh
ot re
plica
tion
Actona TotalStorage
Fast100 LeftHand
RemoteIP Copy
EMC Symmetrix
Hardware-based
replication (2)
(availability)
Synch
ron
ous
Asy
nch
ron
ous Jo
urn
ale
d
replica
te-o
n-w
rite
Sch
edule
d sn
apsh
ot re
plica
tion
Sun StorEdge PeerStorage Array Intransa
Software-based
replication
(confidentiality/
integrity)
Clo
nin
g
Delta
/blo
ck chang
es
CH
AP
RA
DIU
S
VVM
Storage Replicator
Data Migrator
DoubleTake
EverStor
Software-based
replication (2)
(confidentiality/
integrity)
Clo
nin
g
Delta
/blo
ck chang
es
CH
AP
RA
DIU
S
Sun StorEdge QFS
RepliStor
IBM Informix
Dynamic Server
Falcon’s IPStor
Hardware-based
replication
(confidentiality/
integrity)
Clo
nin
g
Delta
/blo
ck chang
es
CH
AP
RA
DIU
S
Actona
TotalStorage
Fast100
LeftHand
RemoteIP Copy
EMC Symmetrix