Tom,
we are currently backing up approx 4.5 TB nightly. This is with 16 X
9840A/B STK Fibre channel drives, 2 X 9310 Silos',
2.5 TB of ESS disk storage pools, and a 4 way 6H1 AIX TSM server with
4GB of
memory.
There are 2XGigE interfaces and 6X10/100 Ethernet cards into our server
farms.
We feel we have maxed out our configuration now, and have aggressively
been
moving towards a production implementation of LAN-Free for some of our
largest clients, such as Exchange 2000 (1.6TB daily), SAP/AIX (400GB
daily),
and some large Oracle SUN applications (500 GB daily).
best regards,
Kevin Mercer
Sr. Enterprise Storage Network Manager
RBC Royal Bank
-----Original Message-----
From: Kauffman, Tom [mailto:KauffmanT AT NIBCO DOT COM]
Sent: Friday, February 21, 2003 11:08 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: Anyone doing 1TB+ Backup Nightly
Richard --
I do a large Oracle/SAP database nightly, with this result:
BR077I Database file for backup: /oracle/PRD/sapbackup/cntrlPRD.dbf
BR061I 487 files found for backup, total size 746281.344 MB
BKI1215I: Average transmission rate was 260.748 GB/h (74.168 MB/sec).
BKI1227I: Average compression factor was 1.00.
BKI0020I: End of program at: Thu Feb 20 21:49:52 2003 .
BKI0021I: Elapsed time: 02 h 47 min 47 sec .
BKI0024I: Return code is: 0.
My TSM server is an RS/6000 660-6M1 with 10 LTO tape drives in an IBM
3584
library. This backup does NOT go to disk, it goes directly to four
tapes,
over two gigabit ethernet interfaces. The database server is another
660-6M1, with three fiber-channel connections to an IBM ESS. Both
systems
are 4-way; the database server has 8 GB and the TSM server is a 6 GB
system.
The tape drives are SCSI, with two drives per cable; I see about 4.5 to
1
hardware compression on this backup. The gigabit ethernets are dedicated
for
backups (my 'backup1' and 'backup2' networks). The TSM database and disk
pools are spread over two ESS arrays, with the database and recovery
logs
TSM mirrored between the two (yes, I'm paranoid; so?)
During the backup the TSM server runs at 30 to 40% CPU usage; the SAP
database server is at 70 to 90% (anyone got a clue why TDP/R3 would
pound
the CPU like this, when it's not doing compression? I am doing 6-way
multiplexing, that may be a contributor).
Tom Kauffman
NIBCO, Inc
-----Original Message-----
From: Dearman, Richard [mailto:rdearm1 AT UIC DOT EDU]
Sent: Friday, February 21, 2003 9:34 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Anyone doing 1TB+ Backup Nightly
I do 1TB+ backups nightly which run for about 8 hours. A large part of
our
backup is a 500GB Oracle database backup to TSM. The database backups
up
over a private 1Gb connection to a AIX P660-6h1 server with 2GB of RAM
and 4
processors. The data then goes to nine 2disk stripe sets, over a 1Gb
SAN
connection (I went with stripe sets because RAID5 was just to slow).
I'm
getting high iowat times on my AIX TSM server. I'm having a hard time
pinpointing exactly where the bottleneck is at. Currently it takes 51/2
hours to backup 500GB but I know it can be better.
My question is are any of you that are moving this amount of data faster
than me using a more powerful server like a IBM 690.
THanks
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