128 OES 2 SP2: Planning and Implementation Guidenovdocx (en) 22 June 2009Use one or more of the following technologies: Multiple Path I/O: NSS helps prevent failure in the connection between the CPU and thestorage device by automatically identifying multiple paths between each NetWare serverand its storage devices.For more information, see “Managing Multipath I/O to Devices (NetWare)” in the OES 2SP2: NSS File System Administration Guide. Software RAIDs: NSS supports software RAIDS to improve storage availability andperformance by enhancing data fault tolerance and I/O performance.For more information, see “Managing NSS Software RAID Devices” in the OES 2 SP2:NSS File System Administration Guide. Server Clusters: You can configure up to 32 NetWare servers or Linux servers into a high-availability cluster where resources and services are dynamically allocated to any server inthe cluster and automatically switched to another server if the hosting server fails.By manually switching services, IT organizations can maintain and upgrade serversduring production hours and eliminate scheduled downtime.For more information, see the NW6.5 SP8: Novell Cluster Services 1.8.5 AdministrationGuide and the OES 2 SP2: Novell Cluster Services 1.8.7 for Linux Administration Guide.13.1.6 NetWare Core Protocol Support (Novell Client Support)on LinuxMany organizations rely on Novell ClientTM software and the NetWare Core ProtocolTM (NCP) forhighly secure file storage services.Novell Storage Services (NSS) volumes are NCP volumes by nature, and you can also define LinuxPOSIX volumes as NCP volumes. The main difference in access control between NSS volumes andLinux POSIX volumes that are defined as NCP volumes is that NSS extended file and directoryattributes are not available on Linux POSIX volumes.The NCP server for OES 2 lets you attach to Linux POSIX volumes that are defined as NCPvolumes using Novell Client software. For more information, see Section 17.6, “NCPImplementation and Maintenance,” on page 200.13.2 Planning OES File StorageThe following sections can help you plan for storage on your OES network: Section 13.2.1, “Directory Structures,” on page 128 Section 13.2.2, “File Service Support Considerations,” on page 129 Section 13.2.3, “General Requirements for Data Storage,” on page 129 Section 13.2.4, “OES 2 Storage Planning Considerations,” on page 129 Section 13.2.5, “NSS Planning Considerations,” on page 13413.2.1 Directory StructuresTo plan the directory structures you need on OES 2, see “Understanding Directory Structures inLinux POSIX File Systems” in the OES 2 SP2: File Systems Management Guide.
