Storage Discovery via a host Discovery can find information about direct-attached storage (DAS), network-attached storage (NAS) and storage area network (SAN) storage units that connect to a host via a local I/O port or host bus adapter (HBA). Discovery of storage via a host reconciles data and creates relationships between the host's file systems and associated local storage devices. The local storage devices represent the storage available to the host, whether it's directly attached or provided by Fibre Channel or iSCSI. This reconciliation assumes that the storage server has been discovered first. Discovery collects and creates CIs in the CMDB for the following information: File systems (local and NAS). Disks (both SAN disks and DAS drives). Fibre Channel (FC) HBAs and ports. Linux Volume Manager (LVM) volumes. LVM volume data resides in the Storage Pool [cmdb_ci_storage_pool] table. Veritas Volume Manager disks, subdisks, disk groups, plexes, and volumes. This diagram shows the relationship of storage devices to a host computer. Figure 1. Storage relationship to a host Storage requirements for DiscoveryDiscovering storage via a host requires the MID Server to have the necessary credentials to the host server.Configure Discovery for UNIX or Linux HostsDiscovery can find information about a UNIX or Linux host and attached storage.Configure Discovery for Windows hostsDiscovery can find information about a Windows host and attached storage.Discovery data collected for storage via a hostDiscovery uses these tables and probes to gather information about storage units that connect to a host via a local I/O port or Host Bus Adapter (HBA).Storage references discovered via a hostDiscovery maps these references for storage units that connect to a host via a local I/O port or Host Bus Adapter (HBA). Discovery storage relationshipsDiscovery creates these relationships for storage CIs connected to a host.Data collected for HBAs on Linux and ESX serversDiscovery collects information on host bus adapters (HBA) for fiber channel enabled devices connected to Linux and ESX servers.Data collected for HBAs on Solaris serversDiscovery collects information on host bus adapters (HBA) for Fibre Channel (FC) enabled devices connected to Solaris servers.Data collected for HBAs on Windows serversDiscovery collects information on host bus adapters (HBA) for Fibre Channel enabled devices connected to Windows servers.Data collected for Veritas Volume Manager on LinuxDiscovery collects disk and volume information for Veritas Volume Manager (VxVM) on Linux hosts and maps file systems mounted on Veritas volumes to the upstream storage provider.