HP Storage Essentials NAS Manager Software - Manual (Page 329)

Storage Essentials 5.00.01 User Guide 299
in one zone and the rest appear in another zone. Members of a zone can only communicate with
other members in the zone. If two elements are not within the same zone, they cannot communicate.
Zones are usually created for a particular task, such as controlling access between devices or
groups. You might create zones based on an application or an operating system. For example,
some network administrators prefer to put all of the Microsoft Windows computers in one zone and
all of the Sun Solaris computers in another. As mentioned previously, you can create zones
according to an application. For example, you might want to create a zone for production and
another zone for finance. This way the users in the finance department are not even aware of the
disks and ports available for production and vice versa.
As shown in the following figure, ports 1 through 5 on the switch are assigned to a zone for
production and ports 4 through 8 are assigned to the zone for the finance department. Users in the
finance department can access storage systems B and C but not storage system A. Likewise, users in
the production department can access storage systems A and C, but not storage system B. The
following figure is an example of switch port zoning because the zones are assigned to ports on a
switch.
Figure 52 Resources in Two Zones
Only elements in an active zone set can communicate with each other. When a zone set is not
active, it does not have any effect. If we do not want users in the Production and Finance zones to
have access to the same storage, these two zones must be in two different zone sets, which must be
both active. Since you can only have one active zone set to a fabric, the Production zone belongs to
a zone set in one fabric and the Finance zone belongs to another zone set in another fabric.
A zone can be in more than one zone set. For example, the Finance zone could be in an active and
inactive zone set. This allows for more flexibility. For example assume the Finance zone is a member
of an active zone set named Zone Set One and a member of an inactive zone set named Zone Set
Two in the same fabric. Zone Set Two contains additional zones. Assume you want to make users