[458] in I/T Delivery
Enterprise Monthly Report
daemon@ATHENA.MIT.EDU (Grant Young)
Fri Mar 30 16:44:52 2001
Message-Id: <4.3.2.7.2.20010330162524.0322cd20@hesiod>
Date: Fri, 30 Mar 2001 16:41:20 -0500
To: delivery@mit.edu
From: Grant Young <gyoung@MIT.EDU>
Cc: ebs-l@mit.edu, kelley@mit.edu, rar@mit.edu
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Project Name: Enterprise Backup System
Project Leader: Grant Young
Report Date: March 30, 2001
URL: http://windsurf.mit.edu/ebs
Issues:
* Progress is slow but steady on getting the SAP machines up to appropriate
levels of firmware support. Patience and experience appear to be a virtues
to accomplishing this smoothly.
* Continuing problems with "media write" errors are vexing the operational
reliability of the systems. Many Veritas sites are reporting this problem
with minimal effective response from Veritas. In general, the backups retry
and are completed but it creates a problem with reliability.
Accomplishments Past Period:
* Continued maintence and operation of the E40 Netbackup system.
* E40 systems are all now at recent support and even levels of firmware and
O/S patch revision levels which should simplify support issues.
* Beginning to bring W91 systems to the requisite firmware and patch levels to
support backup over the SAN.
* Web site updating began (fitfully).
Goals for the Coming Period
* Continue hardware reconfiguration in W91 for the rollout.
* Determine dates for rollout of online db backups in E40.
* Develop requirements and strategy for web-based reporting of backup job
sucess and failure.
Team Dynamics:
* Good.
Lessons Learned:
* Backups are probably the most stressful I/O regime you can encounter on a
SAN. Matching host bus adapter firmware and driver software are remarkably
important to handling it well.
* Implementation on "production" and "near-production" systems teaches many
lessons the hard way.
----------------
Grant Young, MIT Information Systems
Administrative Servers Service Team
W91-219B -- 253-7529
