GLYPH<SM590000> Define subnets for the Storwize V7000 system and for the hosts for internet Small  Computer System Interface (iSCSI) connectivity. GLYPH<SM590000> Define the IP addresses for IP replication (if required). GLYPH<SM590000> Define back-end storage that will be used by the system. GLYPH<SM590000> Define the managed disks (MDisks) in the back-end storage to be used by Storwize  V7000. GLYPH<SM590000> Define the storage pools, specify MDisks for each pool and document mapping of MDisks  to back-end storage. Parameters of the back-end storage determine the characteristics of  the volumes in the pool. Make sure that each pool contains MDisks of similar (ideally,  identical) performance characteristics. GLYPH<SM590000> Plan allocation of hosts and volumes to I/O Groups to optimize the I/O load distribution  between the hosts and the Storwize V7000. Allowing a host to access more than one I/O  group might better distribute the load between system nodes. However, doing so reduces  the maximum number of hosts that are attached to the Storwize V7000. GLYPH<SM590000> Plan queue depths for the attached hosts. For more information, see this website. GLYPH<SM590000> Plan for the physical location of the equipment in the rack. GLYPH<SM590000> Verify that your planned environment is a supported configuration. GLYPH<SM590000> Verify that your planned environment does not exceed system configuration limits. GLYPH<SM590000> Single site or multi-site configuration GLYPH<SM590000> Physical separation of system building blocks GLYPH<SM590000> Quorum availability 46  Implementing the IBM Storwize V7000 with IBM Spectrum Virtualize V8.2.1 The Storwize V7000 uses three drives that are configured as array members or hot  spares, as quorum disks for the clustered system. If no external MDisks can be used as  quorum disks, the preferred practice is to distribute quorum disks over SAS channels to  increase system resiliency. The current locations of the quorum disks can be displayed by  using the  lsquorum  command, and relocated by using the  chquorum  command. Dual rack deployment might increase availability of your system if your back-end storage,  SAN, and LAN infrastructure also do not use single rack placement scheme. You can  further increase system availability by ensuring that cluster nodes are powered from  different power circuits and are in different fire protection zones. For more information about cross-site configurations, see  IBM Storwize V7000, Spectrum  Virtualize, HyperSwap, and VMware Implementation , SG24-8317.  Multi-site configurations increase solution resiliency and can be the basis of disaster  recovery solutions. Storwize V7000 allows configuration of multi-site solutions, with sites  working in active-active or active-standby mode. Synchronous and asynchronous data  replication is supported by multiple inter-site link options. When planning deployment of IBM Storwize V7000, avoid creating single points of failure.  Plan system availability according to the requirements specified for your solution. Consider  the following aspects, depending on your availability needs: Planning activities required for Storwize V7000 deployment are described next. 3.2 Planning for availability