|
After conversing with the HW provider yesterday, they are *not* going to
replace the internal 5755 tape drive yet again.
Instead, we are keeping it and one of the 3580 tape libraries. They will
continue to maintain both.
Regarding the TTEs on internal tape drives. In talking to them, I related
what I was hearing on this list. The guy I was talking to thinks
(somewhere deep in his memory banks) that it's an issue with buffering on
internal LTO2 tape drives on Power 5 equipment. The tape drive can't
handle the data as fast as it's being received so the tape drive tells the
OS "Hey, wait a minute. I ain't ready yet." So the OS sends it again and
records a TTE. Later drives and HW (LTO3 and up, Power 6 and up) this
buffering issue was dealt with. That's why people here with Power 5 are
seeing TTEs and those with later HW are not. He's trying to find
confirmation of that somewhere.
On Tue, Mar 4, 2014 at 2:38 PM, <rob@xxxxxxxxx> wrote:
Yeah, it was tape categories and other gory stuff.backplane
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: "Steinmetz, Paul" <PSteinmetz@xxxxxxxxxx>
To: "'Midrange Systems Technical Discussion'"
<midrange-l@xxxxxxxxxxxx>
Date: 03/04/2014 02:27 PM
Subject: RE: Temporary tape errors
Sent by: midrange-l-bounces@xxxxxxxxxxxx
Rob,
Is this doc you where referring to.
http://www-01.ibm.com/support/docview.wss?uid=nas8N1019328
I did this once years back, when I migrated from Power5 to Power7.
BRMS migrations not supported, had use save 21/restore 21.
Paul
-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [
mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of rob@xxxxxxxxx
Sent: Tuesday, March 04, 2014 1:17 PM
To: Midrange Systems Technical Discussion
Subject: Re: Temporary tape errors
There are ways to do *MOUNTED and whatnot with a library. I have an old
document back from my days before I drank the BRMS kool-aid and became a
convert. It's a PITA, but doable.
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: Jeff Crosby <jlcrosby@xxxxxxxxxxxxxxxx>
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx>
Date: 03/04/2014 12:24 PM
Subject: Re: Temporary tape errors
Sent by: midrange-l-bounces@xxxxxxxxxxxx
I will probably go ahead and do the SAVE21 for ***** and grins, and for
the
practice since it's been a long time for an actual SAVE21. When they do
the RAID 6 conversion in the weeks ahead I'll have to do a SAVE21. So
I'll
practice now.
Since it's a tape /library/, you can't do *MOUNTED hence you can't do it
unattended. If I remember right, that is.
On Tue, Mar 4, 2014 at 12:05 PM, Jim Oberholtzer <
midrangel@xxxxxxxxxxxxxxxxx> wrote:
For a planned recovery, no doubt "21" is the way to go.day
BRMS shines when the recovery is unplanned, at zero dark thirty after a
or two of getting the rest of the stuff running and hardware fixed, andnow
you need to start the recovery. No question BRMS is going to outshinethe
manual recovery, even with the overhead.add
--
Jim Oberholtzer
Chief Technical Architect
Agile Technology Architects
-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Steinmetz, Paul
Sent: Tuesday, March 04, 2014 10:36 AM
To: 'Midrange Systems Technical Discussion'
Subject: RE: Temporary tape errors
Totally agree.
A BRMS restore can be twice as long a Restore 21.
And it is much simpler.
The BMRS recovery report is not 100%, one must read between the lines,
or delete some items.does
I'm an advocate of BRMS, but not keen on BRMS recoveries.
I feel a restore 21 does a quicker, better job than a BRMS recovery.
Paul
-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Jim Oberholtzer
Sent: Tuesday, March 04, 2014 11:27 AM
To: 'Midrange Systems Technical Discussion'
Subject: RE: Temporary tape errors
There is one advantage to a "21" over a *SAVSYS in BRMS. Speed. BRMS
add some overhead, very worth it to me, but overhead nonetheless.the
--
Jim Oberholtzer
Chief Technical Architect
Agile Technology Architects
-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of rob@xxxxxxxxx
Sent: Tuesday, March 04, 2014 10:04 AM
To: Midrange Systems Technical Discussion
Subject: Re: Temporary tape errors
There's no real advantage to a GO SAVE 21, versus the BRMS version of
full system save. And I'd run the BRMS restore report and download theMail
spool file, just in case.
Rob Berendt
--
IBM Certified System Administrator - IBM i 6.1 Group Dekko Dept 1600
to: 2505 Dekko Drive
Garrett, IN 46738
Ship to: Dock 108
6928N 400E
Kendallville, IN 46755
http://www.dekko.com
From: Jeff Crosby <jlcrosby@xxxxxxxxxxxxxxxx>
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx
Date: 03/04/2014 10:52 AMequivalent
Subject: Re: Temporary tape errors
Sent by: midrange-l-bounces@xxxxxxxxxxxx
Thanks for chiming in.
The tape drive and whatnot swap would probably be scheduled for 5pm.
Regarding the full backup: Every morning at 3am we do the BRMS
of a SAVE21. Then, @4:45pm, when all billing for the next day isfinished,
we do an incremental backup of *ALLUSR libs and *SPLF.no
That close enough? No incremental IFS at day's end. However, there's
reason I couldn't run an actual SAVE21 at that time.
On Tue, Mar 4, 2014 at 10:45 AM, Jim Oberholtzer <
midrangel@xxxxxxxxxxxxxxxxx> wrote:
Jeff,
This is not such a big deal, what really is happening is the
centeris
being replaced. They seem to think the problem is the backplane forin
the tape. Could be. A full back up is in order before swapping the
cage is
order, but I don't see it as a high risk procedure.never
--
Jim Oberholtzer
Chief Technical Architect
Agile Technology Architects
-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Scott
Mildenberger
Sent: Tuesday, March 04, 2014 9:35 AM
To: Midrange Systems Technical Discussion
Subject: RE: Temporary tape errors
Jeff,
We have an internal drive and the report shows lots of TTE's, I have
looked at this before so don't know if it has always been like this.issues
The report doesn't recommend replacing any media and we have not had
any
restoring anything off tape.the
Scott
-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Jeff Crosby
Sent: Tuesday, March 04, 2014 6:51 AM
To: Midrange Systems Technical Discussion
Subject: Re: Temporary tape errors
I heard from my HW service provider this morning. They want to
replace
internal 5755 drive, a 'cage', and wiring harness I think that's it,but
heshort).
may have said something else. I asked whether the replacement drive
was tested and would eliminate the Temporary Tape Errors ("TTE" for
They said it was tested, but no, the TTEs would not be eliminated.center
I asked why should I change drives and still have TTEs? They said
this drive would have fewer errors. They have 15 systems in their
data
and every internal tape drive has TTEs. Customers with internal tape
drives also have TTEs. Systems with external tape drives (data
isand
customers) don't have TTEs. Per them, TTEs on internal tape drives
midrangethe
norm.
This *really* bothers me to think that it's acceptable in the
mailingworld to have TTEs on internal tape drives. I'm really interested indrive
whether anyone on this list that is using internal tape drive for
backup would check their *VOLSTATS via the PRTERRLOG command and
report.
I have yet to give them the OK to do this. When I do, I may say that
I want to do it Friday at 5pm so if there is a catastrophic issue we
have the weekend to recover. (The last time they replaced the
internal tape
weamazed
lost a hard drive upon restart.) Maybe I'm overreacting, but I am
at
how much my confidence in the HW has been shaken over the past couple
of months.
--
This is the Midrange Systems Technical Discussion (MIDRANGE-L)
takelist
To post a message email: MIDRANGE-L@xxxxxxxxxxxx To subscribe,
unsubscribe, or change list options,
visit: http://lists.midrange.com/mailman/listinfo/midrange-l
or email: MIDRANGE-L-request@xxxxxxxxxxxx Before posting, please
mailinga moment to review the archives athttp://archive.midrange.com/midrange-l.
--
This is the Midrange Systems Technical Discussion (MIDRANGE-L)
takelist
To post a message email: MIDRANGE-L@xxxxxxxxxxxx To subscribe,
unsubscribe, or change list options,
visit: http://lists.midrange.com/mailman/listinfo/midrange-l
or email: MIDRANGE-L-request@xxxxxxxxxxxx Before posting, please
alista moment to review the archives at
http://archive.midrange.com/midrange-l.
--
Jeff Crosby
VP Information Systems
UniPro FoodService/Dilgard
P.O. Box 13369
Ft. Wayne, IN 46868-3369
260-422-7531
www.dilgardfoods.com
The opinions expressed are my own and not necessarily the opinion of my
company. Unless I say so.
--
This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing
To post a message email: MIDRANGE-L@xxxxxxxxxxxx To subscribe,
unsubscribe,
or change list options,
visit: http://lists.midrange.com/mailman/listinfo/midrange-l
or email: MIDRANGE-L-request@xxxxxxxxxxxx Before posting, please take
http://archive.midrange.com/midrange-l.moment to review the archives at
alist
--
This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing
To post a message email: MIDRANGE-L@xxxxxxxxxxxx To subscribe,
unsubscribe,
or change list options,
visit: http://lists.midrange.com/mailman/listinfo/midrange-l
or email: MIDRANGE-L-request@xxxxxxxxxxxx Before posting, please take
http://archive.midrange.com/midrange-l.moment to review the archives at
alist
--
This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing
To post a message email: MIDRANGE-L@xxxxxxxxxxxx To subscribe,
unsubscribe,
or change list options,
visit: http://lists.midrange.com/mailman/listinfo/midrange-l
or email: MIDRANGE-L-request@xxxxxxxxxxxx Before posting, please take
http://archive.midrange.com/midrange-l.moment to review the archives at
alist
--
This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing
To post a message email: MIDRANGE-L@xxxxxxxxxxxx To subscribe,
unsubscribe,
or change list options,
visit: http://lists.midrange.com/mailman/listinfo/midrange-l
or email: MIDRANGE-L-request@xxxxxxxxxxxx Before posting, please take
http://archive.midrange.com/midrange-l.moment to review the archives at
listlist
--
This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing
To post a message email: MIDRANGE-L@xxxxxxxxxxxx
To subscribe, unsubscribe, or change list options,
visit: http://lists.midrange.com/mailman/listinfo/midrange-l
or email: MIDRANGE-L-request@xxxxxxxxxxxx
Before posting, please take a moment to review the archives
at http://archive.midrange.com/midrange-l.
--
Jeff Crosby
VP Information Systems
UniPro FoodService/Dilgard
P.O. Box 13369
Ft. Wayne, IN 46868-3369
260-422-7531
www.dilgardfoods.com
The opinions expressed are my own and not necessarily the opinion of my
company. Unless I say so.
--
This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing
list
To post a message email: MIDRANGE-L@xxxxxxxxxxxx
To subscribe, unsubscribe, or change list options,
visit: http://lists.midrange.com/mailman/listinfo/midrange-l
or email: MIDRANGE-L-request@xxxxxxxxxxxx
Before posting, please take a moment to review the archives
at http://archive.midrange.com/midrange-l.
--
This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing
list
To post a message email: MIDRANGE-L@xxxxxxxxxxxx
To subscribe, unsubscribe, or change list options,
visit: http://lists.midrange.com/mailman/listinfo/midrange-l
or email: MIDRANGE-L-request@xxxxxxxxxxxx
Before posting, please take a moment to review the archives
at http://archive.midrange.com/midrange-l.
--
This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing
list
To post a message email: MIDRANGE-L@xxxxxxxxxxxx
To subscribe, unsubscribe, or change list options,
visit: http://lists.midrange.com/mailman/listinfo/midrange-l
or email: MIDRANGE-L-request@xxxxxxxxxxxx
Before posting, please take a moment to review the archives
at http://archive.midrange.com/midrange-l.
--
This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing
To post a message email: MIDRANGE-L@xxxxxxxxxxxx
To subscribe, unsubscribe, or change list options,
visit: http://lists.midrange.com/mailman/listinfo/midrange-l
or email: MIDRANGE-L-request@xxxxxxxxxxxx
Before posting, please take a moment to review the archives
at http://archive.midrange.com/midrange-l.
--
Jeff Crosby
VP Information Systems
UniPro FoodService/Dilgard
P.O. Box 13369
Ft. Wayne, IN 46868-3369
260-422-7531
www.dilgardfoods.com
The opinions expressed are my own and not necessarily the opinion of my
company. Unless I say so.
--
This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing list
To post a message email: MIDRANGE-L@xxxxxxxxxxxx
To subscribe, unsubscribe, or change list options,
visit: http://lists.midrange.com/mailman/listinfo/midrange-l
or email: MIDRANGE-L-request@xxxxxxxxxxxx
Before posting, please take a moment to review the archives
at http://archive.midrange.com/midrange-l.
As an Amazon Associate we earn from qualifying purchases.
This mailing list archive is Copyright 1997-2024 by midrange.com and David Gibbs as a compilation work. Use of the archive is restricted to research of a business or technical nature. Any other uses are prohibited. Full details are available on our policy page. If you have questions about this, please contact [javascript protected email address].
Operating expenses for this site are earned using the Amazon Associate program and Google Adsense.