Thanks for the info... I've actually already read this whitepaper. It
is indeed very informative. I look forward to seeing the CX600 along
with the other products I'm evaluating.
From: lemons_terry AT emc DOT com [mailto:lemons_terry AT emc DOT com]
Sent: Tuesday, August 26, 2003 11:51 AM
To: Joel Fisher
Cc: NETWORKER AT LISTMAIL.TEMPLE DOT EDU
Subject: RE: [Networker] Advantages of disk to disk backup
"I'm doing an eval of several different ATA based arrays in the next
of months so I'll be able to give a better idea of performance issues
that is complete. I'll be checking out the . . . EMC Clariion CX600 . .
Given that, please consider reading the following engineering white
which was written by my group:
"This EMC Engineering white paper explains how to implement
technology with Legato NetWorker DiskBackup Option (DBO), and identifies
what to expect when using CLARiiON CX series storage systems as
of backups. It also compares the performance of CLARiiON storage systems
today's high-performance tape drives such as SDLT and LTO technologies.
This paper talks about 'traditional' backups, where a bulk movement of
data is done to disk, instead of to tape. We are VERY close to a new
in which snapshots will provide a second method of performing a backup.
you purchase a disk storage product that can provide snapshot
then you could use this product for either a bulk movement backup, or an
instantaneous snapshot backup, or both. Tape drives will never be able
do snapshot backups. So, an investment in disk-based backup will
backup functionality not possible with tape drives. As you compare the
costs and speeds of backup-to-tape vs. backup-to-disk, don't forget
Please let me know of any questions you might have.
p.s. I considered not posting this reply to the list, as I didn't want
come off as making a sales pitch for my company's product. I decided to
post, because this paper offers hard numbers seen in our tests.
Backup-to-disk is still new enough that there isn't a lot of information
'out there', and I hope that this paper will got a little way to help
that void. Plus, I point out the advantage of snapshots, which are
in many company's products.
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