[Veritas-bu] limitations on SIZE_DATA_BUFFERS
2005-11-16 10:55:36
Subject: |
[Veritas-bu] limitations on SIZE_DATA_BUFFERS |
From: |
stumpb AT michigan DOT gov (Bob Stump) |
Date: |
Wed, 16 Nov 2005 10:55:36 -0500 |
Thank ypu to all who answered my earlier post.
The correct answer given to me was 256K (262144)
Here is a followup question.
Can this value also be used in W2K and W2K3 servers?
I seem to remember limitations in earlier versions of Windows/NetBackup.
>>> Bob Stump 11/15/2005 4:47 PM >>>
Because the data buffer size equals the tape I/O size, the value specified in
SIZE_DATA_BUFFERS must not exceed the maximum tape I/O size supported by the
tape drive or operating system. This is usually 256 KB or 128 KB.
For Digital Linear Tape (DLT) drives, the number that seems to give the best
performance for SIZE_DATA_BUFFERS is 65536. Further performance improvements
can be achieved by increasing the value in the NUMBER_DATA_BUFFERS file.
What is the optimum for STK 9940B?
|
<Prev in Thread] |
Current Thread |
[Next in Thread>
|
- [Veritas-bu] limitations on SIZE_DATA_BUFFERS,
Bob Stump <=
|
|
|