EMC VPLEX, Installation And Setup Manual

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Setting up a VPLEX Metro implementation 69
Setting up VPLEX
Output example for a dual-engine cluster:
/engines/engine-1-1/directors:
director-1-1-A
director-1-1-B
/engines/engine-1-2/directors:
director-1-2-A
director-1-2-B
Task 24: Join the
clusters 1. or In either VPlexcli session, type the following
commands to assign an Island ID to the clusters:
cd /clusters
cluster add cluster-1 cluster-2
2. Type the following command to display a cluster summary:
cluster summary
In the output, verify that both clusters have the same Island ID and an operational
status of
ok .
Output example:
Clusters:
Name
Cluster ID Connected Expelled Operational Status Health
--------- ---------- --------- -------- ---------------------------
--------------------------------------------------------------------------
cluster-1
1 true false ok ok
cluster-2 2 true false ok ok
Islands:
Island ID
Clusters
--------- --------------------
1 cluster-1, cluster-2
Task 25: Create
logging volumes You must create a logging volume on each VPLEX Metro cluster. The volume must be
large enough to contain one bit for every page of distributed storage space
(approximately 10 GB of logging volume space for every 320 TB of distributed
devices).
The logging volumes experience much I/O during and after link outages. The
recommended best practice is to stripe each logging volume across many disks for
speed, and also to have a mirror (on another fast disk), because this is important data.
CAUTION
!
If a logging volume does not exist, every link failure could cause a full
resynchronization of every distributed device in the system.
To create the logging volumes, you first must claim the storage volumes that will be
used, and create
extents from those volumes:
1. From the VPlexcli prompt on management server 2, type the
following commands to list the storage volumes:
cd /clusters/cluster- <Cluster_ID> /storage-elements/storage-volumes
ll
VPlexcli-1 VPlexcli-2
VPlexcli-2