HPE 3PAR 数据保护方案

HPE 3PAR 数据保护方案Async Streaming

3PAR Remote Copy Asynchronous Streaming

Cache-based replication architecture

2

Async Streaming Replication

Primary

Secondary

Low RPO (seconds)Low RTO (1+ minutes)

12

3

Writes issued from host server are stored in local array’s cache (after local cache mirroring)

1

An acknowledgement is sent to the host resulting in low latency from the host to the system

2

Writes cache pages are coalesced into tickets that describe IO order and replicated to the second system

3

Write IO is then replayed in order on the secondary system to ensure consistency with primary

4

4

3PAR 的复制

Protect and share data

•Smart

•Initial setup in minutes •Simple and intuitive commands •

No consulting services required

•Complete

•Native IP LAN or FC SAN-based

•Reservation-less –No extra copies or infrastructure needed •Fully compatible with all 3PAR Thin Technologies •Any combination of sync and async periodic RC

•Mirror 1:1 up to 4:4 between 7k, 8k, 10k, 10k, T-and F-class

•True async RC 1:1 mirror between any 7k, 8k, 10k and 20k

Support details can be found in the “OS Upgrade Pre -Planning Guide”•

VMware vSphere Site Recovery Manager (SRM) and vSphere Metro Storage cluster (vMSC) certified

•Scalable

•

1 RCIP link per node –up to 8 per 3PAR array

•Up to 4 RCFC links per node –up to 32 per 3PAR array

1:1 Configuration

Sync RC and/or Async Periodic RC

Any 3PAR arrays

See a demo video here https:///watch?v=7RVozzXOuRQ

4:4 Configuration

Sync RC and/or Async Periodic RC Any 7000, 8000, 10000 or 20000 array

P

S

S P

3PAR Remote Copy Synchronous Continuous operation and synchronization •Real-time Mirror

•Highest I/O currency

•Lock-step data consistency

•Space Efficient

•Thin provisioning aware

•Targeted Use

•Campus-wide business continuity •Guaranteed Consistency •Enabled by Volume Groups

2 : Primary array writes I/O to secondary write cache

P S

1 : Host server writes I/O to primary write cache

2

3 : Remote array acknowledges the receipt of the I/O

1

4

4 : Host I/O acknowledged to host

3

Primary Secondary

Host

Local Snapshots

Initial setup and synchronization

•Efficient even with high latency links

•Local writes acknowledgement

•Bandwidth-friendly

•Just delta replication

•Space efficient

•Thin aware

•Guaranteed Consistency

•Enabled by Volume Groups •Based on snapshots

3

Step 2 :Local snapshot created Primary

Secondary

Step 1 :Secondary volume created 2Step 3 :

Initial synchronization

P

S