Specifications

Table Of Contents
Overview
Software Release Notes Page 63
Disk Requirements (Disk Striping)
For optimum performance, Aprisma recommends running SPECTRUM on
systems with multiple ultra-wide SCSI or EIDE drives using RAID disk
striping technologies.
S
OLARIS
The required configuration is to install SPECTRUM on a separate disk
other than the operating system and install DDM on a separate disk for a
total of 3 disks.
A better configuration is to install SPECTRUM and DDM on a 3-disk
stripe set. The stripe set can be set up by either using the Solstice Disk
Suite software package or through the use of a raid controller, RAID 0.
The BEST solution for disk performance is to install SPECTRUM and
DDM each on their own 3-disk stripe set, which is a combination of the
above two solutions.
To summarize the above Solaris scenarios:
** 3 D
ISK STRIPE SET ON SOLARIS
disk1 = OS and SWAP
disk2 = SPECTRUM
disk3 = DDM
To move the DDM directory onto to a disk separate from Solaris, perform
the following actions:
1. mv DDM to a temporary directory (DDM_TMP)
2. create an empty DDM directory in SS (mkdir DDM)
3. mount the new disk to $SPECROOT/SS/DDM
4. cp DDM_TMP/*DDM (remember to also get .configrc)
W
INDOWS NT (ONLY)
Currently, it is not possible to separate the DDM from the rest of the
SPECTRUM installation on Windows NT. Therefore, the required
configuration is to install SPECTRUM with DDM on its own 3-disk stripe