HP StorageWorks Continuous Access EVA Administrator Guide (T3687-96043, December 2005)

ManualsBrandsHP ManualsSoftwareHP StorageWorks Continuous Access EVA V2.0 Software

• Calculate the disk group occupancy alarm setting according to the EVA best practice, being sure to

include the total maximum capacity for all DR group logs. (See HP Storag eWorks Enterprise Virtual

Array conﬁguration best practices white paper.)

Add hosts

Adding a host deﬁnes a path between the host HBAs and the arrays in the management zone. Using HP

Command View EVA, add e ach host that needs access to the local (source) or remote (destination) arrays.

For convenien

ce, you can perform this and subsequent HP Command View EVA pro ce dures on the local

management server and copy the ﬁnished conﬁguration to the standby and rem ote management servers.

When you add a host for remote replication, select only two host ports—one on each fabric. This

requirement ensures that virtual disks are presented to the sam e HBA pair. For more information about

adding hosts

,seetheHP StorageWorks Command View EVA user guide and HP Command View

EVA online help.

Create and present source virtual disks

Virtual disks are the primary storage objects. Using HP Command View EVA, create virtual disks on the

local (source) array, paying special attention to the p referred path.

Selecting

apreferredpath

For all vir

tual disks that will share a DR group, select a common preferred path (controller port) . Host

I/O goes to

the controller you designate, as long as that path is available. Select failover only or

failover

and failback as follows:

• If the virtual disks will be presented to a host that uses Secure Path, select one of the failover only

paths. The failover-only selections automatically redirect I/O to the alternate path if the preferred

path beco

mes unavailable, b ut allow the host to control the return to the p referred path when it

becomes available.

• If the virtual disks will be presented to a host that uses other multipathing soft ware, select a

failover only or failover and failback path.

For the p

rocedure to create virtual disks, see HP Command View EVA online help.

Presenting virtual d isks

Presenting virtual disks is necessary to allow host access. Using HP Command View EVA or the

replication manager, present source virtual disks to the host servers that will use the storage. B e sure to

present all virtual disks tha t will share a DR group to a common host HBA pair. For the procedure to

present virtual disks, see online help.

Presenting virtual disks to hosts is an array requirement. You must also make virtual disks accessible from

the host's perspective. Using host operating system tools, discover and mount the source virtual disks

(disk devices) as required by the host.

Create DR groups

Before you create DR groups, ensure that:

• Local

and remote arrays are online and accessible to the management server.

• HP Command View EVA on the active local management server h as control of the local and

remote arrays. After you create the DR groups, you can divide the management responsibilities

for multiple a rrays between the local and remote managem ent servers. See HP Command View

EVA user guide for instructions to change the management server that is managing an array.

HP StorageWorks Continuous Access EVA administrator guide