Re: NFS and remote image catalogs/saves ?

ok.


On Fri, Apr 5, 2013 at 9:51 AM, <rob@xxxxxxxxx> wrote:

There is no 'restore'. I don't ftp a save file of my virtual tape image
catalogs. I ftp the image catalog entries directly.

Object . . . . . . : /vrtclg/VRT001
Size of object data in bytes . . . . . : 29780029601
Allocated size of object . . . . . . . : 29787947008
Takes about 41 minutes to do the save to virtual tape. It's all stream
files being saved, no qsys.lib type stuff.
Takes about 1 hour and 20 minutes to ftp the data.
Takes 23 minutes to dupe the tape from image catalog to physical media.

If I combined the save and the transmission by using NFS instead of doing
the transmission offline I can guarantee that the outage of what I backup
will increase from the 45 minutes. Unless you can guarantee that NFS will
be faster than my local disk drives.
Size % %
Unit Type (M) Used Busy
1 4327 52923 62.8 1
2 4327 52923 62.8 1
3 4327 52923 62.8 1
4 4327 52923 62.8 1
5 4327 70564 62.8 1
6 4327 70564 62.8 1

Keep in mind, that modern tape drives may actually be faster than saving
to disk. You're talking about utilizing two different busses, etc. The
tape drive has one user at a time using it versus disk having multiple
users (system tasks, etc) all sending the disk arms all over the place.

We did not do it to save time. We did it to do a remote backup, get the
'tape' over here and then we send it off to Iron Mountain. Please, no
offers to sell me VTL devices at this time.

Rob Berendt
--
IBM Certified System Administrator - IBM i 6.1
Group Dekko
Dept 1600
Mail to: 2505 Dekko Drive
Garrett, IN 46738
Ship to: Dock 108
6928N 400E
Kendallville, IN 46755
http://www.dekko.com





From: Jack Kingsley <iseriesflorida@xxxxxxxxx>
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx>,
Date: 04/05/2013 09:22 AM
Subject: Re: NFS and remote image catalogs/saves ?
Sent by: midrange-l-bounces@xxxxxxxxxxxx



Rob, yes, that is what I would like to know. If it adds an hour to the
save would that be worth it to maybe forgo what you do today with it being
local and then FTP'd. Then what does it on the restore side as well.


On Fri, Apr 5, 2013 at 9:14 AM, <rob@xxxxxxxxx> wrote:

We save to local virtual tape image catalogs. Then we ftp them to

another

system. Then we dupe them to tape. And actually BRMS keeps track of
which physical tape has a save of which particular object on the source
system.
We've not tried NFS. Actually I'm pretty new at NFS. I am using it now
on a few lpars and it gets the job done.

The question becomes, does it slow down the actual save? If so, is it
significant enough to justify more local disk to speed up the process?

We

bring up the services denied during the actual save, after the save is
done but before we start ftping the data over. So our outage window

does

not include the transfer time.


Rob Berendt
--
IBM Certified System Administrator - IBM i 6.1
Group Dekko
Dept 1600
Mail to: 2505 Dekko Drive
Garrett, IN 46738
Ship to: Dock 108
6928N 400E
Kendallville, IN 46755
http://www.dekko.com





From: Jack Kingsley <iseriesflorida@xxxxxxxxx>
To: Midrange Systems Technical Discussion <MIDRANGE-L@xxxxxxxxxxxx
,
Date: 04/05/2013 08:49 AM
Subject: NFS and remote image catalogs/saves ?
Sent by: midrange-l-bounces@xxxxxxxxxxxx



Has anyone did much with this, is it to slow. I am looking to use this
for
daily saves. I know that 6.1.1 is a requirement on both sides.
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