|
|  以 PDF 格式下载本书
Product Description
2
- Solstice(TM) High Availability 1.0 (Solstice HA) is a software product that provides fault-tolerant support and automatic data service failover for specific dual-server hardware configurations. The configurations will recover from server, disk, and network failures, as well as software failures.
- Solstice HA uses Solstice DiskSuite 4.0 software to provide the diskset, mirroring, concatenation, striping, hot spare disks, file system growing, and UNIX file system logging capabilities.
- Solstice HA allows configurations to be either symmetric or asymmetric. In the asymmetric configuration, one of the systems acts as a hot standby for the other system. In symmetric configurations both servers can actively offer data services.
- The data services provided by Solstice High Availability are:
-
- Highly available NFS(R), Sun's distributed computing file system (Solstice High Availability/HA-NFS)
- Highly available ORACLE(R) database management system (Solstice High Availability/HA-ORACLE)
-
Note - A cluster is comprised of two identical compute nodes.
- The SPARCcluster High Availability server family consists of two products, the SPARCcluster 1000 and SPARCcluster 2000 High Availability systems. The systems are implemented on SPARCserver(TM) 1000 or SPARCcenter(TM) 2000 server platforms using redundant SPARCstorage(TM) array 100 systems.
2.1 Features
- The key features of the Solstice HA software package include:
-
- Tolerance of single-point software failures or crashes
- Tolerance of single-point hardware faults
- Appearance of continuous availability of data service (NFS clients will only see "Server Not Responding" messages during a takeover)
- Automatic detection of system and data service failure
- Automatic takeover, recovery, and service restoration
- Automatic post-takeover redirection of HA-NFS clients
- Automatic restart of fault monitoring on a server after it is repaired
- Additionally, Solstice HA provides on-line serviceability which enables administrators to take an appropriately configured server off-line for repair or routine maintenance while the data services remain available from the other server in the configuration.
-
Figure 2-1 and Figure 2-2 depict functional block diagrams of SPARCcluster High Availability servers based on the SPARCserver 1000 and SPARCcenter 2000, respectively.
Figure 2-1
Figure 2-2
2.2 SPARCcluster 1000 High Availability Server Configuration
-
Figure 2-3 shows the SPARCserver 1000 hardware configuration required to support the Solsticeserver(TM) High Availability software. The minimum configuration is:
-
-
2.3 SPARCcluster 2000 High Availability Server Configuration
-
Figure 2-4 shows the SPARCcenter 2000 server hardware configuration required to support the Solstice High Availability software. The minimum configuration is:
-
- Two SPARCcenter 2000s, each equipped with:
· Three system boards
· Six processor modules
· 256 Mbyte RAM
- Three SPARCstorage arrays
- Six FC/S SBus cards, each equipped with a FC/OM optical module
- Terminal concentrator
- Six fiber optic cables
- Four SunFastEthernet cards with Sun private net cables
- Four boot disks
- Four client net SBus cards (SQEC or similar)
- Administration workstation with CD-ROM drive
Figure 2-4
|
|
