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Subject: RE: ndmp backups of mirror volumes
Date: Thu, 25 Sep 2008 18:28:20 -0700
Message-ID: <BB375AF679D4A34E9CA8DFA650E2B04E0BBAE37D@onstor-exch02.onstor.net>
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Thread-Topic: ndmp backups of mirror volumes
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References: <2779531E7C760D4491C96305019FEEB514ACB42509@exch1.onstor.net>
From: "Jobi Ariyamannil" <jobi.ariyamannil@onstor.com>
To: "Xian Hong" <hxian@onstor.com>,
	"Sandrine Boulanger" <sandrine.boulanger@onstor.com>
Cc: "dl-cstech" <dl-cstech@onstor.com>

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You can dump a scheduled snapshot from the mirror target volume.

If this snapshot is removed from the source volume, no more mirror
transfers possible until the backup completes.

=20

Please see the wiki page http://wiki.onstor.net/wiki/Dump.

=20

________________________________

From: Xian Hong=20
Sent: Thursday, September 25, 2008 4:27 PM
To: Sandrine Boulanger
Cc: dl-cstech
Subject: Re: ndmp backups of mirror volumes

=20

It's not a problem if using daily snapshot. Ndmp window should be within
a day.

Best regards,
Hong
Cell:(86) 133-1185-1236

________________________________

From: Sandrine Boulanger
To: Xian Hong
Cc: dl-cstech
Sent: Thu Sep 25 16:23:28 2008
Subject: RE: ndmp backups of mirror volumes

The problem with scheduled snapshot is that they rotate on a certain
schedule, you don't want this to happen in the middle of the backup.=20

=20

________________________________

From: Xian Hong=20
Sent: Thursday, September 25, 2008 3:45 PM
To: Sandrine Boulanger
Cc: dl-cstech
Subject: Re: ndmp backups of mirror volumes

=20

Is it possible to improve this: NDMP can use scheduled snapshot? Or it's
difficulty for customer to create on-demand snapshot by manually written
script. There are two balks for this:
1) Scripting user face is not friendly and hard to maintain scripts.
2) To setup a client to trigger scheduled snapshot.

Best regards,


Hong
Cell:(86) 133-1185-1236

________________________________

From: Sandrine Boulanger
To: Rick Hollenbeck (Glasshouse); dl-cstech
Sent: Thu Sep 25 13:14:56 2008
Subject: RE: ndmp backups of mirror volumes

You have to create an on-demand snapshot on the source volume,
preferably with -p option to pin it, start mirror or wait until next
scheduled mirror, then specify this snapshot path in the DMA.

=20

=20

________________________________

From: Rick Hollenbeck (Glasshouse)=20
Sent: Thursday, September 25, 2008 1:06 PM
To: dl-cstech
Subject: ndmp backups of mirror volumes

=20

Can mirror volumes be backed up via ndmp and if so, are there any
caveats?

=20

Thanks in advance.

=20

Richard B. Hollenbeck | Systems Support Engineer

Main: 800-328-7739 | Office: 919 767-5811
Glasshouse Technologies=20
Dedication * Teamwork * Integrity * Enthusiasm

=20

This email and any files transmitted with it are confidential and
intended solely for the use of the individual or entity to whom they are
addressed.=20

If you have received this email in error please notify the system
manager. This message contains confidential information and is intended
only for=20

the individual named. If you are not the named addressee you should not
disseminate, distribute or copy this e-mail.

=20


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<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>You can dump a scheduled snapshot =
from the
mirror target volume.<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>If this snapshot is removed from =
the
source volume, no more mirror transfers possible until the backup =
completes.<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>Please see the wiki page =
http://wiki.onstor.net/wiki/Dump.<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p>&nbsp;</o:p></span></font></p>

<div>

<div class=3DMsoNormal align=3Dcenter style=3D'text-align:center'><font =
size=3D3
face=3D"Times New Roman"><span style=3D'font-size:12.0pt'>

<hr size=3D2 width=3D"100%" align=3Dcenter tabindex=3D-1>

</span></font></div>

<p class=3DMsoNormal><b><font size=3D2 face=3DTahoma><span =
style=3D'font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font =
size=3D2
face=3DTahoma><span style=3D'font-size:10.0pt;font-family:Tahoma'> Xian =
Hong <br>
<b><span style=3D'font-weight:bold'>Sent:</span></b> Thursday, September =
25, 2008
4:27 PM<br>
<b><span style=3D'font-weight:bold'>To:</span></b> <st1:PersonName =
w:st=3D"on">Sandrine
 Boulanger</st1:PersonName><br>
<b><span style=3D'font-weight:bold'>Cc:</span></b> dl-cstech<br>
<b><span style=3D'font-weight:bold'>Subject:</span></b> Re: ndmp backups =
of
mirror volumes</span></font><o:p></o:p></p>

</div>

<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'><o:p>&nbsp;</o:p></span></font></p>

<p><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:10.0pt;font-family:
Arial;color:navy'>It's not a problem if using daily snapshot. Ndmp =
window
should be within a day.<br>
<br>
Best regards,<br>
Hong<br>
Cell:(86) 133-1185-1236</span></font><o:p></o:p></p>

<div class=3DMsoNormal align=3Dcenter style=3D'text-align:center'><font =
size=3D3
face=3D"Times New Roman"><span style=3D'font-size:12.0pt'>

<hr size=3D2 width=3D"100%" align=3Dcenter tabindex=3D-1>

</span></font></div>

<p class=3DMsoNormal><b><font size=3D2 face=3DTahoma><span =
style=3D'font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From</span></font></b><font =
size=3D2
face=3DTahoma><span style=3D'font-size:10.0pt;font-family:Tahoma'>: =
<st1:PersonName
w:st=3D"on">Sandrine Boulanger</st1:PersonName><br>
<b><span style=3D'font-weight:bold'>To</span></b>: Xian Hong<br>
<b><span style=3D'font-weight:bold'>Cc</span></b>: dl-cstech<br>
<b><span style=3D'font-weight:bold'>Sent</span></b>: Thu Sep 25 16:23:28 =
2008<br>
<b><span style=3D'font-weight:bold'>Subject</span></b>: RE: ndmp backups =
of
mirror volumes</span></font><o:p></o:p></p>

<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>The problem with scheduled snapshot =
is
that they rotate on a certain schedule, you don&#8217;t want this to =
happen in the
middle of the backup. <o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p>&nbsp;</o:p></span></font></p>

<div>

<div class=3DMsoNormal align=3Dcenter style=3D'text-align:center'><font =
size=3D3
face=3D"Times New Roman"><span style=3D'font-size:12.0pt'>

<hr size=3D2 width=3D"100%" align=3Dcenter tabindex=3D-1>

</span></font></div>

<p class=3DMsoNormal><b><font size=3D2 face=3DTahoma><span =
style=3D'font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font =
size=3D2
face=3DTahoma><span style=3D'font-size:10.0pt;font-family:Tahoma'> Xian =
Hong <br>
<b><span style=3D'font-weight:bold'>Sent:</span></b> Thursday, September =
25, 2008
3:45 PM<br>
<b><span style=3D'font-weight:bold'>To:</span></b> <st1:PersonName =
w:st=3D"on">Sandrine
 Boulanger</st1:PersonName><br>
<b><span style=3D'font-weight:bold'>Cc:</span></b> dl-cstech<br>
<b><span style=3D'font-weight:bold'>Subject:</span></b> Re: ndmp backups =
of
mirror volumes</span></font><o:p></o:p></p>

</div>

<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'><o:p>&nbsp;</o:p></span></font></p>

<p><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:10.0pt;font-family:
Arial;color:navy'>Is it possible to improve this: NDMP can use scheduled
snapshot? Or it's difficulty for customer to create on-demand snapshot =
by
manually written script. There are two balks for this:<br>
1) Scripting user face is not friendly and hard to maintain scripts.<br>
2) To setup a client to trigger scheduled snapshot.<br>
<br>
Best regards,<br>
<br>
<br>
Hong<br>
Cell:(86) 133-1185-1236</span></font><o:p></o:p></p>

<div class=3DMsoNormal align=3Dcenter style=3D'text-align:center'><font =
size=3D3
face=3D"Times New Roman"><span style=3D'font-size:12.0pt'>

<hr size=3D2 width=3D"100%" align=3Dcenter tabindex=3D-1>

</span></font></div>

<p class=3DMsoNormal><b><font size=3D2 face=3DTahoma><span =
style=3D'font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From</span></font></b><font =
size=3D2
face=3DTahoma><span style=3D'font-size:10.0pt;font-family:Tahoma'>: =
<st1:PersonName
w:st=3D"on">Sandrine Boulanger</st1:PersonName><br>
<b><span style=3D'font-weight:bold'>To</span></b>: Rick Hollenbeck =
(Glasshouse);
dl-cstech<br>
<b><span style=3D'font-weight:bold'>Sent</span></b>: Thu Sep 25 13:14:56 =
2008<br>
<b><span style=3D'font-weight:bold'>Subject</span></b>: RE: ndmp backups =
of mirror
volumes</span></font><o:p></o:p></p>

<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>You have to create an on-demand =
snapshot
on the source volume, preferably with &#8211;p option to pin it, start =
mirror or wait
until next scheduled mirror, then specify this snapshot path in the =
DMA.<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p>&nbsp;</o:p></span></font></p>

<div>

<div class=3DMsoNormal align=3Dcenter style=3D'text-align:center'><font =
size=3D3
face=3D"Times New Roman"><span style=3D'font-size:12.0pt'>

<hr size=3D2 width=3D"100%" align=3Dcenter tabindex=3D-1>

</span></font></div>

<p class=3DMsoNormal><b><font size=3D2 face=3DTahoma><span =
style=3D'font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font =
size=3D2
face=3DTahoma><span style=3D'font-size:10.0pt;font-family:Tahoma'> Rick =
Hollenbeck
(Glasshouse) <br>
<b><span style=3D'font-weight:bold'>Sent:</span></b> Thursday, September =
25, 2008
1:06 PM<br>
<b><span style=3D'font-weight:bold'>To:</span></b> dl-cstech<br>
<b><span style=3D'font-weight:bold'>Subject:</span></b> ndmp backups of =
mirror
volumes</span></font><o:p></o:p></p>

</div>

<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Can mirror volumes be backed up via ndmp and if so, =
are
there any caveats?<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Thanks in advance.<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal><strong><b><font size=3D2 color=3Dnavy =
face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial;color:navy;font-weight:normal=
'>Richard
B. Hollenbeck | Systems Support =
Engineer</span></font></b></strong><strong><b><font
size=3D1 color=3Dnavy face=3D"Times New Roman"><span =
style=3D'font-size:9.0pt;
color:navy;font-weight:normal'><o:p></o:p></span></font></b></strong></p>=


<p class=3DMsoNormal style=3D'margin-bottom:12.0pt'><st1:place =
w:st=3D"on"><font
 size=3D1 color=3Dmaroon face=3DArial><span =
style=3D'font-size:8.0pt;font-family:Arial;
 color:maroon'>Main</span></font></st1:place><font size=3D1 =
color=3Dmaroon
face=3DArial><span =
style=3D'font-size:8.0pt;font-family:Arial;color:maroon'>:
800-328-7739 | Office: 919 767-5811</span></font><font =
color=3Dnavy><span
style=3D'color:navy'><br>
</span></font><strong><b><font size=3D2 color=3Dnavy face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial;color:navy;font-weight:normal=
'>Glasshouse
Technologies</span></font></b></strong><font color=3Dnavy =
face=3DArial><span
style=3D'font-family:Arial;color:navy'> <br>
</span></font><font size=3D1 color=3Dnavy face=3DArial><span =
style=3D'font-size:7.5pt;
font-family:Arial;color:navy'>Dedication * Teamwork&nbsp;* =
Integrity&nbsp;*
Enthusiasm</span></font><font size=3D2 color=3Dmaroon =
face=3DTahoma><span
style=3D'font-size:10.0pt;font-family:Tahoma;color:maroon'><o:p></o:p></s=
pan></font></p>

<p class=3DMsoNormal><font size=3D2 color=3Dmaroon face=3DTahoma><span
style=3D'font-size:10.0pt;font-family:Tahoma;color:maroon'><o:p>&nbsp;</o=
:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 color=3Dmaroon face=3D"Times New =
Roman"><span
style=3D'font-size:10.0pt;color:maroon'>This email and any files =
transmitted with
it are confidential and intended solely for the use of the individual or =
entity
to whom they are addressed. <o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 color=3Dmaroon face=3D"Times New =
Roman"><span
style=3D'font-size:10.0pt;color:maroon'>If you have received this email =
in error
please notify the system manager. This message contains confidential
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