Difference between revisions of "VAXserver"
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| − | '''VAXservers''' are [[VAX]] [[server]]s (not for interactive [[time-sharing]] usage) which share many components with other VAX models. Lines include: | + | '''VAXservers''' are [[VAX]] [[server]]s (not for interactive [[time-sharing]] usage), which share many components with other VAX models. Lines include: |
* [[VAXserver 3100 series]] | * [[VAXserver 3100 series]] | ||
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==Hardware Differences== | ==Hardware Differences== | ||
| − | The main difference between a VAXserver model and its VAX/MicroVAX | + | The main difference between a VAXserver model and its VAX/MicroVAX parent/sibling was the [[read-only memory|ROM]] on the [[Central Processing Unit|CPU]] board. |
| − | Further differences exist in the equipment with options and peripheral devices. For example, VAXservers always had (for obvious reasons) an [[Ethernet]] network adapter. | + | Further differences exist in the equipment with options and [[peripheral]] devices. For example, VAXservers always had (for obvious reasons) an [[Ethernet]] network adapter. |
==Typical Usage== | ==Typical Usage== | ||
| − | One of the prime uses of VAXserver computers was to act as | + | One of the prime uses of VAXserver computers was to act as [[bootstrap]] and [[mass storage]] servers for [[Local Area VAXcluster]]s (LAVC). |
Another important use was as a "Compute Server", e.g. as a dedicated machine for [[batch processing]] large jobs, particularly in [[VAXcluster]]s, where one could simply send a batch job to another cluster member as if the batch queue was on the local machine. | Another important use was as a "Compute Server", e.g. as a dedicated machine for [[batch processing]] large jobs, particularly in [[VAXcluster]]s, where one could simply send a batch job to another cluster member as if the batch queue was on the local machine. | ||
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:''After compute power, the most important factor in selecting a server is the speed of its Ethernet adapter. Servers should be equipped with the highest-bandwith Ethernet adapters in the cluster.'' | :''After compute power, the most important factor in selecting a server is the speed of its Ethernet adapter. Servers should be equipped with the highest-bandwith Ethernet adapters in the cluster.'' | ||
| − | If there was already a multi-user VAX or a | + | If there was already a multi-user VAX or a 'big' VAXcluster ([[CI]]/[[DSSI]]) with free capacity, one usually didn't buy an additional VAXserver. However, if the existing VAXes were already busy or a new LAVC was being set up, then VAXservers were the first choice. A lot of money could be saved by using VAXservers instead of multi-user VAXes, since the costs for the [[operating system]] licenses were much lower. |
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| + | {{semi-stub}} | ||
==See also== | ==See also== | ||
* [[VAXstation]] | * [[VAXstation]] | ||
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<!-- ==External links== | <!-- ==External links== | ||
--> | --> | ||
{{Nav VAX}} | {{Nav VAX}} | ||
| − | [[Category: | + | [[Category: DEC VAX Systems]] |
| + | [[Category: VAXservers]] | ||
Latest revision as of 01:50, 2 June 2024
VAXservers are VAX servers (not for interactive time-sharing usage), which share many components with other VAX models. Lines include:
- VAXserver 3100 series
- VAXserver 3300/3400
- VAXserver 3500/3600
- VAXserver 3800/3900
- VAXserver 4000 series
- VAXserver 6000 series
- VAXserver 9000 series
Hardware Differences
The main difference between a VAXserver model and its VAX/MicroVAX parent/sibling was the ROM on the CPU board.
Further differences exist in the equipment with options and peripheral devices. For example, VAXservers always had (for obvious reasons) an Ethernet network adapter.
Typical Usage
One of the prime uses of VAXserver computers was to act as bootstrap and mass storage servers for Local Area VAXclusters (LAVC).
Another important use was as a "Compute Server", e.g. as a dedicated machine for batch processing large jobs, particularly in VAXclusters, where one could simply send a batch job to another cluster member as if the batch queue was on the local machine.
Recommendations
Recommandations from AA-LA27B-TE VMS VAXcluster Manual VMS V5.4:
- As a general rule, use as boot and disk servers the most powerful computers in the cluster. Low-powered computers can become overloaded when serving many busy satellites, or when many satellites boot simultaneously. Note, however, that two or more moderately powered servers can provide better performance than a single high-powered server.
- Multiple servers give better availability, and they distribute the workload across more Ethernet adapters. If you have several computers of roughly comparable power, it is reasonable to use them all as boot servers. This arrangement gives optimal load balancing. In addition, if one computer fails or is shut down, others remain available to serve satellites.
- After compute power, the most important factor in selecting a server is the speed of its Ethernet adapter. Servers should be equipped with the highest-bandwith Ethernet adapters in the cluster.
If there was already a multi-user VAX or a 'big' VAXcluster (CI/DSSI) with free capacity, one usually didn't buy an additional VAXserver. However, if the existing VAXes were already busy or a new LAVC was being set up, then VAXservers were the first choice. A lot of money could be saved by using VAXservers instead of multi-user VAXes, since the costs for the operating system licenses were much lower.
See also
| v • d • e VAX Computers and Operating Systems |
|---|
| VAX-11/7xx (including VAX 86x0) - VAX-11/780 • VAX-11/785 • VAX-11/750 • VAX-11/730 • VAX 8600 • VAX 8650
VAX 8000 series (excluding VAX 86x0, above) - VAX 82xx/83xx series • VAX 85xx/87xx/88xx series MicroVAXen (many types also come in VAXserver and VAXstation models) - MicroVAX I • MicroVAX II VAXstation Series - VAXstation I • VAXstation II Late Model VAXen - VAX 4000 series • VAX 6000 series • VAX 7000 series • VAX 9000 series • VAX 10000 series |
| Special Purpose VAXen - VAXft series • rtVAX series • Infoserver series
Clones - CM 1700 • TPA-11/580 |
