Moving from 8 AIT-3 to 10 LTO-3 is quite an increase in throughput
potential. The potential increase is about ten times the current.
The 10 LTOs, if working concurrently and in optimal conditions, will
need a supply of at least 750MB/sec.
To get such a throughput from any single host will be quite a challenge.
You will probably need to use several storage nodes or NAS heads to
achieve this throughput.
This is just a very general observation as you did not specify storage
volume, storage spread, storage architecture and applications.
Itzik
-----Original Message-----
From: Legato NetWorker discussion [mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU]
On Behalf Of Jim Ruskowsky
Sent: Tuesday, January 17, 2006 23:16
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Subject: [Networker] Server Needed to drive multiple LTO3 drives
Dear List,
We are in the process of upgrading our existing NetWorker setup here.
We'll
be replacing our ADIC Scalar 1000 (8 x AIT3 drives) with an ADIC Scalar
i2000 with about 10 LTO3 drives. A good bit of the data is on multiple
older machines which will continue to backup over the network to a
dedicated storage node and then onto tape. We are currently running
Solaris 9 on our servers and storage nodes, but I have concerns over
what hardware to choose going forward. Sun's midrange servers (like the
v440 / v490) seem to be a bit slow on the I/O in comparison to offerings
from other vendors - such as IBM running AIX. We will connect the
storage node to the network with either 2 GB ethernets, or a single 10G
ethernet - figuring that a fully streaming LTO3 will pretty much use up
a singe 1GB ethernet.
Any thoughts, recommendations, experiences, warnings would be
appreciated.
Thanks
Jim Ruskowsky
Jefferies and Company
Jefferies archives and reviews outgoing and incoming e-mail. It may be
produced at the request of regulators or in connection with civil
litigation.
Jefferies accepts no liability for any errors or omissions arising as a
result of transmission. Use by other than intended recipients is
prohibited.
To sign off this list, send email to listserv AT listserv.temple DOT edu and
type "signoff networker" in the body of the email. Please write to
networker-request AT listserv.temple DOT edu if you have any problems wit this
list. You can access the archives at
http://listserv.temple.edu/archives/networker.html or via RSS at
http://listserv.temple.edu/cgi-bin/wa?RSS&L=NETWORKER
To sign off this list, send email to listserv AT listserv.temple DOT edu and
type "signoff networker" in the
body of the email. Please write to networker-request AT listserv.temple DOT edu
if you have any problems
wit this list. You can access the archives at
http://listserv.temple.edu/archives/networker.html or
via RSS at http://listserv.temple.edu/cgi-bin/wa?RSS&L=NETWORKER
|
