Due to a temporary lack of disk we had to start writing backups from one of
our large NT file servers directly to tape. we have two large NT file
servers backing up at the same time. One going to SSA disk pool the other to
a pool that is writing directly to 2 3590E1A's. TSM Server is hosted on a
RISC/6000 H70. Both client machines backup up around 75-80 GB per night on
average. They are both Compaq 6500's connected to IBM ESS for disk.
In most cases the machine backing up directly to tape out performs the
machine backing up to the disk pool. This is just comparing Total Elapsed
Time and nothing else.
Imagine that!
Curt Magura
Lockheed Martin EIS
Gaithersburg, Md.
301-240-6305
-----Original Message-----
From: Dearman, Richard [mailto:[EMAIL PROTECTED]]
Sent: Monday, April 30, 2001 11:07 AM
To: [EMAIL PROTECTED]
Subject: Re: 500GB Backup
We have 3590EA1 drives using Ultra Scsi connection that write at 14MB/s
which I believe is faster than the SSA disks write speed. I think the the
3590EA1 will write at 40MB/s if using compression. I don't see my tape
drives writing faster than my disk.
-----Original Message-----
From: Burton, Robert [mailto:[EMAIL PROTECTED]]
Sent: Monday, April 30, 2001 9:59 AM
To: [EMAIL PROTECTED]
Subject: Re: 500GB Backup
Tape direct is a heck of a lot faster than disk....
Robert Burton
Open System Storage Analyst
Royal Bank of Canada
315 Front St West
Toronto, On, M5V 3A4
416-348-3849
email: [EMAIL PROTECTED]
-----Original Message-----
From: Dearman, Richard [mailto:[EMAIL PROTECTED]]
Sent: Monday, April 30, 2001 10:56 AM
To: [EMAIL PROTECTED]
Subject: Re: 500GB Backup
Why would I send the data to tape first writing to disk is faster.
-----Original Message-----
From: Vibhute, Bandu [mailto:[EMAIL PROTECTED]]
Sent: Friday, April 27, 2001 3:22 PM
To: [EMAIL PROTECTED]
Subject: Re: 500GB Backup
What I understood from your setup is as follows.
You are doing cold backup everyday using TSM disk pools. Your backup time is
6 hrs for 500 Gig and you will be backing up 1TB in next few months. Your
TSM server has only one SSA Adapter.
If you could do following changes in your setup, You should be able to
reduce backup window time.
1. Schedule backup with multiple threads using Gigabit Fiber Channel
Interface.
2. Configure Copy group to send backup data directly to tapes( Don't use
disk group)
-Bandu
-----Original Message-----
From: Dearman, Richard [mailto:[EMAIL PROTECTED]]
Sent: Friday, April 27, 2001 1:42 PM
To: [EMAIL PROTECTED]
Subject: Re: 500GB Backup
The amount of data is the same everday 500GB full backup. I'm using one SSA
card in the tsm system. I could get Gig cards if I have proof that I'm
maxing out the current 100mb cards in the system and I don't seem to be
doing that. The tsm server is plugged into the same switch has the backup
server and on the same ip subnet. Also, the database files that I'm backing
up are just oracle dump files. The tsm serve is also running aix 4.3.3.
-----Original Message-----
From: Vibhute, Bandu [mailto:[EMAIL PROTECTED]]
Sent: Friday, April 27, 2001 12:35 PM
To: [EMAIL PROTECTED]
Subject: Re: 500GB Backup
We are backing up 2 servers of capacity 1.2 TB everyday. We have shark
system and flash copy is implemented on shark. Without client interference
we backup 1.2 Gig to TSM. It's running with 6 drives. No LAN/Free. But it's
Client/Free backup. To restore we have placed Gbit Interfaces in Client and
TSM Server.
You need to give more information of your server and database.
Are you doing incremental or full backup and which database you have?
If incremental how much data is changed everyday?
Can you afford GBit interface between data server and TSM? ( IT needs 2
adapter and 1 switch)
How many drives your library have? How many SSA adapters are installed in
server?
Thank you,
Bandu Vibhute,
Bestfoods Baking Company,
55 Paradise Lane, Bay Shore, NY, 11706
Voice: 631-951-5212, Cell: 516-702-0323
-----Original Message-----
From: PINNI, BALANAND (SBCSI) [mailto:[EMAIL PROTECTED]]
Sent: Friday, April 27, 2001 1:01 PM
To: [EMAIL PROTECTED]
Subject: Re: 500GB Backup
Importance: High
Hi
If I am correct IBM offers LAN free backup which is faster .But need to
purchase additional s/w.
pinni
-----Original Message-----
From: Dearman, Richard [mailto:[EMAIL PROTECTED]]
Sent: Friday, April 27, 2001 11:48 AM
To: [EMAIL PROTECTED]
Subject: 500GB Backup
I need to backup a 500GB database and my current setup is my tsm server is
on the same ip subnet has the database server. Tsm is connected to 500GB of
SSA storage with 5 RAID5 sets with two 50GB tsm volumes on each raid set.
My though put to the disk only seems to be 9000 kB/s. Which doesn't seem
very high to me. My backup time is about 6 hours. Does anyone have any
better senarios for backing up this amount of data in the smallest amount of
time soon. I am going to be backing up a 1Tb per day and I need to get me
backup times to the lowest. Does anyone have any suggestions on how to do
that.
Thanks
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