Novell Doc: NW 6.5 SP8: Storage and File Services Overview

1.4 Reliability

Your storage solution must provide reliable access to data for users and applications. One way to improve reliability is through redundancy of components to avoid single points of failure in your network design. OES supports redundant devices, connections, and servers.

Storage Requirement	Novell OES Solution
Reliable access to data in the event of disk failure: The ability to provide fault-tolerant solutions to allow users and applications to access data in the event of disk failure.	NSS software RAID 1 and RAID 5 devices provide disk fault tolerance. NSS supports software RAIDs 0, 1, and 5 on Linux and NetWare platforms. It supports software RAIDs 10, and 15 on NetWare platforms. For information, see the OES 2: NSS File System Administration Guide.
Reliable access to data in the event of connection failure: The ability to provide fault-tolerant solutions to allow users and applications to access data in the event of connection failure.	NSS supports for NetWare multipath I/O to devices for connection fault-tolerance. Multipathing can be used for DAS, NAS, and SAN (iSCSI and Fibre Channel) architectures in single server and in cluster solutions. For information, see Managing Multipath I/O to Devices (NetWare) the OES 2: NSS File System Administration Guide. On Linux, you can manage multipath I/O with Device Mapper Multipath tools. For information, Managing Multipath I/O for Devices in the SLES 10 SP3: Storage Administration Guide.
Reliable access to data in the event of server and application failure: The ability to provide fault-tolerant solutions to allow users and applications to access data in the event of server or application failure.	Novell Cluster Services provides server and application fault-tolerance options. See the NW6.5 SP8: Novell Cluster Services 1.8.5 Administration Guide and the OES 2 SP2: Novell Cluster Services 1.8.7 for Linux Administration Guide.

Storage Requirement

Novell OES Solution

Reliable access to data in the event of disk failure: The ability to provide fault-tolerant solutions to allow users and applications to access data in the event of disk failure.

NSS software RAID 1 and RAID 5 devices provide disk fault tolerance. NSS supports software RAIDs 0, 1, and 5 on Linux and NetWare platforms. It supports software RAIDs 10, and 15 on NetWare platforms.

For information, see the OES 2: NSS File System Administration Guide.

Reliable access to data in the event of connection failure: The ability to provide fault-tolerant solutions to allow users and applications to access data in the event of connection failure.

NSS supports for NetWare multipath I/O to devices for connection fault-tolerance. Multipathing can be used for DAS, NAS, and SAN (iSCSI and Fibre Channel) architectures in single server and in cluster solutions.

For information, see Managing Multipath I/O to Devices (NetWare) the OES 2: NSS File System Administration Guide.

On Linux, you can manage multipath I/O with Device Mapper Multipath tools. For information, Managing Multipath I/O for Devices in the SLES 10 SP3: Storage Administration Guide.

Reliable access to data in the event of server and application failure: The ability to provide fault-tolerant solutions to allow users and applications to access data in the event of server or application failure.

Novell Cluster Services provides server and application fault-tolerance options. See the NW6.5 SP8: Novell Cluster Services 1.8.5 Administration Guide and the OES 2 SP2: Novell Cluster Services 1.8.7 for Linux Administration Guide.