HP StorageWorks Enterprise Virtual Array Cluster FIO Starter Kit Guida Utente Scaricare il pdf (Pagina 34)

• Use zoning objects, often called aliases, on the switch as zone members. Zoning objects allow

you to create logical representations on the switch of physical devices and ports in the SAN. These

objects can be modified or removed as the physical topology changes and are easier to manage.

• Follow a logical naming convention for zoning objects and zones that is readable and can be

understood by anyone with knowledge of the HP SVSP. For example, a zoning object name (for

example, VSM1_H1_5a14) could tell someone the device, the HBA on the device, and what port

number on the device, that the object represents. Similarly, a zone name could tell someone which

zoning objects are contained in the zone. Naming conventions are a personal preference but

should convey meaningful information about the zone and be easily understood. Tables 1 and 2

in the Zoning Components in HP SVSP section provide an example naming convention that can

be used with HP SVSP.

• Verify the zoning configuration afterwards. Devices being able to see each other and accessing

presented virtual disks or LUNs is no guarantee that the zoning configuration is correct with all

the expected paths between devices. Some zoning errors will not manifest themselves until certain

events, such as a path failover, occur. Using path failover tests within a fabric and across fabrics

should be a part of zone verification for HP SVSP.

• Use symmetric zoning rules and standard naming conventions in both fabrics.

HP SVSP zoning principles

An HP SVSP zoning configuration is different from zoning implemented in other SANs that have

devices that are strictly categorized as target or initiator devices. In HP SVSP, the VSM and Data Path

Module (DPM) are unique devices that act as both targets and initiators. Devices within an HP SVSP

configuration can be divided into five distinct types:

1. DPM—The backbone of HP SVSP that acts as a hardware virtualization device between hosts

and storage devices connected to it.

2. VSM—HP SVSP management servers that perform a function similar to HP Command View. The

VSM also has the additional function of implementing HP SVSP data mover functions such as

import, migration and replication.

3. Storage—Back-end storage devices that provide the underlying storage being virtualized and

managed by HP SVSP.

4. Host—Front-end devices, which access the virtualized storage through HP SVSP.

5. Management—Devices that access the back-end storage devices directly for the sole purpose of

configuring them for use with HP SVSP.

An HP SVSP zoning configuration can logically be divided into front-end and back-end zones

depending on the interaction between the devices in the zone. The general rule is that any zone used

to access an HP SVSP virtual disk is a front-end zone while any zone containing a storage device or

dealing with the underlying storage I/O is a back-end zone. This distinction between front-end and

back-end zones is particularly important if it is necessary to install additional front-end and back-end

switches to support additional devices. All HP SVSP zones should follow these basic guidelines to

ensure the most stable, manageable configuration possible:

• Each zone contains a target device and an initiator device. In the case of the DPM and VSM,

these devices can be classified as targets or initiators, depending on what device they are inter-

acting with in a given zone. For example, in a Host-DPM zone, the DPM is the target while the

host is the initiator. However in a DPM-Storage zone, the DPM is the initiator while the storage

device is the target.

• Each zone contains exactly two device types. For example, HP recommends you have different

zones for the DPM-VSM and Storage-DPM rather than having a single zone containing the DPM,

VSM, and storage devices.

Zoning34

1 2 ... 29 30 31 32 33 34 35 36 37 38 39 ... 207 208

HP StorageWorks Enterprise Virtual Array Cluster FIO Starter Kit Guida Utente Pagina 34

Commenti su questo manuale

HP StorageWorks Enterprise Virtual Array Cluster FIO Starter Kit Guida Utente Pagina 34

Commenti su questo manuale

Prodotti e manuali riguardandi Tavolini per PC/Workstation HP StorageWorks Enterprise Virtual Array Cluster FIO Starter Kit