bharath_25
2 Bronze

SRDF Operations Steps

Jump to solution

Can anybody provide SRDF operation steps using screenshots of with taking an example of two devices to be replicated.

Bharath

0 Kudos
1 Solution

Accepted Solutions
ayakovenko
1 Copper

Re: SRDF Operations Steps

Jump to solution
There are two SRDF types: static and dynamic.
Static SRDF is implementing by bin-file creation. Dynamic SRDF you can create any time by you self.
And static SRDF actually is not used at all now, except specific implementatoins (as Celerra).
For dynamic SRDF at first you must enable it at the array level and do some configuration in the bin-file.
Then you must create dynamic srdf group on srdf directors with commands like:
symrdf addgrp -label <GrpLabel> -rdfg <GrpNum>
      -sid <SymmID> -dir <Dir> -remote_rdfg <GrpNum>
      -remote_sid <SymmID> -remote_dir <Dir>
      [-noprompt] [-i <Interval>] [-c <Count>]
      [[-fibre] | [-gige] | [-farpoint]]
      [-link_domino] [-remote_link_domino]
      [-auto_link_recovery] [-remote_auto_link_recovery]
      [-link_limbo <Secs>] [-rem_link_limbo <Secs>]
symrdf modifygrp <-add | -remove>
      <-rdfg <GrpNum> | -label <GrpLabel>>
      -sid <SymmID> [-dir <Dir>] [-remote_dir <Dir>]
      [-noprompt] [-i <Interval>] [-c <Count>] [-star]
symrdf removegrp -sid <SymmID>
      <-rdfg <GrpNum> | -label <GrpLabel>>
      [-noprompt] [-i <Interval>] [-c <Count>] [-star]
Then you can create association between source and target devices by creating device file with this format:
<source_device_1> <target_device_1>
<source_device_2> <target_device_2>
...
<source_device_n> <target_device_n>
and by implemnting of command:
symrdf -file <Filename> -sid <SymmID> -rdfg <GrpNum>
      [-bypass] [-noprompt] [-i <Interval>] [-c <Count>]
      [-v|-noecho] [-force] [-symforce]
    createpair -type <R1|R2>
       <-invalidate <R1|R2> [-nowd] | -establish | -restore>
       [-rdf_mode <async>]
       [-g <NewDg>] [-remote] [-cons_exempt]
Then you can use commands from Sanjit Achary posts.

This is for SRDF/S. SRDF/A is some more complex.

0 Kudos
35 Replies
Sanjit1
2 Iron

Re: SRDF Operations Steps

Jump to solution

Hey Bharath!!

Please specify the kind of SRDF & type of operation that you want to perform...

Sanjit Kumar Achary

bharath_25
2 Bronze

Re: SRDF Operations Steps

Jump to solution

SRDF/S, SRDF/A, between two DMX storage arrays

0 Kudos
Sanjeet1
2 Iron

Re: SRDF Operations Steps

Jump to solution

Hi,

Following are some typical steps for SRDF/S operations. I hope it will helpful to you.

To get the details, please refer "SRDF Control Operations Guide" attached. Its an excellent handbook.

Display info. about R1 and R2 devices

# symrdf list

# symdev list R1

# symdev list R2

Create device group & add devices into it

# symdg create <devicegroupname> -type <grouptype>

# symld -g <devicegroupname> -sid XXXX add dev <devicename>

# symdg show show <grouptype>

Querying & listing device group & devices

# symrdf -g <devicegroupname> query

# symcfg list

# symdev show <devicename>

# symcfg list -ra all   ( displays RLD info. by reaching symm units one or two hops away)

SPLIT

# symrdf -g <devicegroupname> -noprompt split

ESTABLISH

# symrdf -g <devicegroupname> -noprompt establish

RESTORE

# symrdf -g <devicegroupname> -noprompt restore

FAILOVER

# symrdf -g <devicegroupname> -noprompt failover

UPDATE

# symrdf -g <devicegroupname> -noprompt update

minksg
3 Cadmium

Re: SRDF Operations Steps

Jump to solution

Wow Sanjay that paper is really, really old! I haven't been deep into SAN myself for about 3 years now (started working more on the network management side), but I would imagine that some of those commands may be outdated. (SAN guys help me out?).

Your best bet is always to go to Powerlink for the most up-to-date documentation.

Just a reminder to everyone - as long as these technical questions aren't talking about production environments, its ok to have them here. If the threads start getting to specific to actual environments, its really better to have the conversation over in the EMC Support Forums.

Also, I'm moving this thread up to the main Proven Professional community. The Advisor section is really more for getting advice on the certification exams, courses to take, etc.

Thanks!

-Gina

0 Kudos
Sanjeet1
2 Iron

Re: SRDF Operations Steps

Jump to solution

Yeah.. may be some of the commands are out dated... still most are working fine ... I am using them in my work.

However, the recent document is available @ Home > Support > Technical Documentation and Advisories > Software ~ S ~ Documentation > Solutions Enabler > v7.1.x

minksg
3 Cadmium

Re: SRDF Operations Steps

Jump to solution

Thanks for posting the link to the doc in Powerlink!

Where do you work?

0 Kudos
Sanjeet1
2 Iron

Re: SRDF Operations Steps

Jump to solution

Hello Gina,

I am working @ TCS, India as Storage Consultant (EMC Storage)

0 Kudos
minksg
3 Cadmium

Re: SRDF Operations Steps

Jump to solution

Sanjit that is great. I'm happy that you have found the community!

0 Kudos
bharath_25
2 Bronze

Re: SRDF Operations Steps

Jump to solution

Once we create a Device Group, Add devices to device group, Set Mode on the local & remote machine. How does the system know that it has to transfer data to a particular devices in the Device Groups.?

Do we have to specify any relationship b/w R1(newsrcdg) & R2(newtgtdg) device group?

Regards

Bharath Kotla

0 Kudos