Installation and Upgrade Guide

The following steps are necessary to set up the InfoServer software on the designated system:
1. Copy SYS$STARTUP:ESS$LAD_STARTUP.TEMPLATE to ESS$LAD_STARTUP.DAT (save
the ESS$LAD_STARTUP.TEMPLATE file as a backup).
2. Edit SYS$STARTUP:ESS$LAD_STARTUP.DAT to modify parameters as needed. This file
configures InfoServer parameters affecting the OpenVMS LASTport/Disk™ (LAD) server,
which allows access to the DVD drive. The following is an example of the configuration file
(with default settings):
!++
! ESS$LAD_STARTUP.TEMPLATE
!
! Copy this file to SYS$STARTUP:ESS$LAD_STARTUP.DAT and edit it
! to suit your local situation.
!
! This file is used by SYS$STARTUP:ESS$LAD_STARTUP.COM to set up
! the parameters for the InfoServer Application on OpenVMS
! LASTport/Disk (LAD) server.
!
! Note:
! The LAD disk block cache is structured as a number of fixed-size
! buckets. You must specify both the bucket size and the number of
! buckets for the cache.
!
! The LAD cache is allocated from non-paged pool and is in no way
! associated with the XFC cache. The total LAD cache size in bytes
! may be determined by the formula:
!
! cache-bytes = bucket-size-in-blocks * number-of-buckets * 512
!
! Be sure the SYSGEN parameters NPAGDYN/NPAGEVIR are sized appropriately.
!
! The following keywords with values are accepted by this procedure:
!
! BUFFER_SIZE - A number between 3 and 8 denoting the
! bucket size in blocks as follows:
! 3 - 8 blocks
! 4 - 16 blocks
! 5 - 32 blocks
! 6 - 64 blocks
! 7 - 128 blocks
! 8 - 256 blocks
! CACHE_BUCKETS - Number of buckets
! MAXIMUM_SERVICES - Maximum number of services (max=1024)
! WRITE_LIMIT - Server wide count of asynchronous writes
!--
BUFFER_SIZE = 3 ! default (8 block buckets)
CACHE_BUCKETS = 512 ! Default setting
WRITE_LIMIT = 0 ! No async writes
MAXIMUM_SERVICES = 256 ! default (typically more than enough)
The following table provides a short description of each of the parameters:
DescriptionParameter
The InfoServer block cache is structured as an array of fixed-size buffers (also called
buckets). The BUFFER_SIZE parameter determines the size of each buffer or bucket.
The numeric value of this parameter is an integer in the range 3 through 8,
representing the bucket size in 512-byte blocks as follows. Note that bucket sizes
larger than 32 blocks might not be appropriate for most users. The OpenVMS client
segments I/O requests larger than 31 blocks into 31-block chunks, which could
result in excessive I/O activity to the disk. The cache is allocated from nonpaged
pool and is dedicated solely to the LAD driver.
BUFFER_SIZE
8 blocks (default)3
16 blocks4
32 blocks5
194 Setting Up and Performing Network Booting