Data Protection Manager – SAN integration Vu Nguyen Cao Son EPG Technical Specialist Microsoft Vietnam
Integrating DPM 2007 with SAN
Allow the DPM customer to perform quick file and application recoveries and Initial Replication (SAN Media Load) of data sources using hardware based snapshot and clone technology, available in a SAN environment.
DPM Initial Replication using SAN Clone technology
Install the DPM agent on the Production Server
Clone the production LUN using the SAN UI
Validate that the cloned LUN is visible in the SAN UI
Fracture the cloned LUN and attach to DPM server
Assign Drive letter and name the cloned LUN
Create Recovery Point LUN & assign drive letter
Create new Protection Group via DPW
State data protection intent
State replication and retention intent
Select Custom volumes in “Disk Allocation” pane
Allocate cloned volume to new PG
“ Do not format” the cloned volume
Select “Manual” Replica creation method
Close wizard and review data structure created by DPM
Move the data on the replica volume into the directory named “Full”. DPM stores the data to be protected into this directory .
Final folder structure on DPM Cloned Replica volume
Run Consistency Check for this new PG
Initial Replication using Cloned Volume is complete
DPM Recovery using SAN hardware snapshot technology
Cancel all running jobs for data source being recovered
Create software snapshot of data source to be recovered Execute the CreateShadowCopy.ps1 power shell script on the DPM server. Provide the data source name and protection group name as input parameters
Create Hardware snapshot of Replica and Recovery Point volumes of data source using SAN UI
Activate the Hardware snapshots using SAN UI
Mount H/w snapshots to Protected server
In Recovery wizard select “SAN Recovery” option
Run Consistency Check after Recovery is complete
Performance impact on Protected server during IR using SAN Clone technology
Performance Impact using EMC SAN
Protection of Exchange Server 2007 (64 bit) using DPM
Intel Xeon 3.0 GHz, 8 GB RAM, Windows 2003 64 bit operating system
Exchange Server Configuration:
This production server has two storage groups supporting 2000 users of 200MB mailbox size.
LoadGen was used to simulate workload on the Production server. LoadGen was running at MMB3 level while cloning the production LUNs.
CLARiiON Array configuration:
CLARiiON CX3 model 40 was used for this analysis.
Two LUNs of 400 GB each were carved out for holding the 2 Exchange Storage Groups (ESG1-DB and ESG2-DB)
Two LUNs of 60 GB each were carved out for holding the 2 Exchange Storage Group Logs (ESG1-Log and ESG2-Log)
Two more LUNs of 400 GB each were carved out for holding the 2 Exchange Storage Group Clones (ESG1-Clone and ESG2-Clone). This LUN will be used as the IR volume on the DPM Server.
Time taken for cloning the entire 800 GB storage groups (2 X 400 GB LUNs):
~ 4 hours
Transfer rate achieved:
(800/(4*60*60))* 1024 = 56.8 MB/Sec. (2X performance over LAN)