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Subject: RE: Limits
Date: Thu, 25 Jan 2007 02:01:54 -0800
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From: "Steffen Thuemmel" <steffen.thuemmel@onstor.com>
To: "Tim O'Callaghan" <tim.ocallaghan@onstor.com>,
	"dl-se" <dl-se@onstor.com>,
	"dl-cstech" <dl-cstech@onstor.com>

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I'd like to add some questions to this. We are set for an EVAL at the
second largest ISPs in Germany. They want to test:

-	Create a 1TB volume,
-	Write 10...100 Million files to that volume
-	Generate more than 1 Million user quotas for that volume
-	Snapshot (measure the time), restore
-	Mirror (when the rate of changes is more than 50%)
Will they hit any limits ? Any performance impact with that much user
quotas ?

Thanks,
St.

Steffen Thuemmel=20
=20
ONStor
Schleussner Str. 42
D-63263 Neu-Isenburg
Germany
=20
telf.       +49 6102 884 84-0
mobil.     +49 173 673 3434
mail.       steffen.thuemmel@onstor.com
web.       www.onstor.com <http://www.onstor.com/>=20
=20

_____________________________________________
From: Tim O'Callaghan=20
Sent: Mittwoch, 24. Januar 2007 23:53
To: dl-se; dl-cstech
Subject: Limits


What is the largest volume currently being mirrored?

Are there any known issues mirroring very large volumes?

Tim

Tim O'Callaghan
Senior S.E. (EMEA)
M + 44 7767435472
EMAIL - tim.ocallaghan@onstor.com
ONStor, Ltd.
NAS for the Enterprise
1201 Parkview Business Park
Theale Reading
UK
RG7 4TY
www.onstor.com



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<P DIR=3DLTR><SPAN LANG=3D"en-us"></SPAN><SPAN LANG=3D"en-us"><FONT =
COLOR=3D"#1F497D" FACE=3D"Calibri">I</FONT></SPAN><SPAN =
LANG=3D"en-us"></SPAN><SPAN LANG=3D"en-us"><FONT COLOR=3D"#1F497D" =
FACE=3D"Calibri">&#8217;</FONT></SPAN><SPAN LANG=3D"en-us"></SPAN><SPAN =
LANG=3D"en-us"><FONT COLOR=3D"#1F497D" FACE=3D"Calibri">d like to add =
some questions to this. We are set for an EVAL at the</FONT></SPAN><SPAN =
LANG=3D"en-us"></SPAN><SPAN LANG=3D"en-us"> <FONT COLOR=3D"#1F497D" =
FACE=3D"Calibri">second</FONT></SPAN><SPAN LANG=3D"en-us"></SPAN><SPAN =
LANG=3D"en-us"> <FONT COLOR=3D"#1F497D" FACE=3D"Calibri">largest ISPs in =
Germa</FONT></SPAN><SPAN LANG=3D"en-us"></SPAN><SPAN =
LANG=3D"en-us"><FONT COLOR=3D"#1F497D" FACE=3D"Calibri">ny. They want to =
test</FONT></SPAN><SPAN LANG=3D"en-us"></SPAN><SPAN LANG=3D"en-us"><FONT =
COLOR=3D"#1F497D" FACE=3D"Calibri">:</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT COLOR=3D"#1F497D" =
FACE=3D"Calibri">-&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT></SPAN><SPAN=
 LANG=3D"en-us"></SPAN><SPAN LANG=3D"en-us"></SPAN><SPAN =
LANG=3D"en-us"></SPAN><SPAN LANG=3D"en-us"></SPAN><SPAN LANG=3D"en-us"> =
<FONT COLOR=3D"#1F497D" FACE=3D"Calibri">Create a 1TB =
volume,</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT COLOR=3D"#1F497D" =
FACE=3D"Calibri">-&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT></SPAN><SPAN=
 LANG=3D"en-us"></SPAN><SPAN LANG=3D"en-us"></SPAN><SPAN LANG=3D"en-us"> =
<FONT COLOR=3D"#1F497D" FACE=3D"Calibri">Write 10</FONT></SPAN><SPAN =
LANG=3D"en-us"></SPAN><SPAN LANG=3D"en-us"><FONT COLOR=3D"#1F497D" =
FACE=3D"Calibri">&#8230;</FONT></SPAN><SPAN LANG=3D"en-us"></SPAN><SPAN =
LANG=3D"en-us"><FONT COLOR=3D"#1F497D" FACE=3D"Calibri">100 Million =
files to that volume</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT COLOR=3D"#1F497D" =
FACE=3D"Calibri">-&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT></SPAN><SPAN=
 LANG=3D"en-us"> <FONT COLOR=3D"#1F497D" FACE=3D"Calibri">Generate more =
than 1 Million user quotas for that volume</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT COLOR=3D"#1F497D" =
FACE=3D"Calibri">-&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT></SPAN><SPAN=
 LANG=3D"en-us"></SPAN><SPAN LANG=3D"en-us"></SPAN><SPAN LANG=3D"en-us"> =
<FONT COLOR=3D"#1F497D" FACE=3D"Calibri">Snapshot (measure the time), =
restore</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT COLOR=3D"#1F497D" =
FACE=3D"Calibri">-&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT></SPAN><SPAN=
 LANG=3D"en-us"> <FONT COLOR=3D"#1F497D" FACE=3D"Calibri">Mirror (when =
the rate of changes is more than 50</FONT></SPAN><SPAN =
LANG=3D"en-us"></SPAN><SPAN LANG=3D"en-us"><FONT COLOR=3D"#1F497D" =
FACE=3D"Calibri">%)</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"></SPAN><SPAN =
LANG=3D"en-us"></SPAN><SPAN LANG=3D"en-us"><FONT COLOR=3D"#1F497D" =
FACE=3D"Calibri">Will they hit any limits ?</FONT></SPAN><SPAN =
LANG=3D"en-us"></SPAN><SPAN LANG=3D"en-us"> <FONT COLOR=3D"#1F497D" =
FACE=3D"Calibri">Any performance impact with that much user quotas =
?</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT COLOR=3D"#1F497D" =
FACE=3D"Calibri">Thanks,</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT COLOR=3D"#1F497D" =
FACE=3D"Calibri">St.</FONT></SPAN><SPAN LANG=3D"en-us"></SPAN><SPAN =
LANG=3D"en-us"></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"></SPAN><SPAN =
LANG=3D"en-us"></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><B></B></SPAN><B><SPAN =
LANG=3D"en-us"><FONT COLOR=3D"#1F497D" FACE=3D"Arial">Steffen =
Thuemmel</FONT></SPAN></B><SPAN LANG=3D"en-us"></SPAN><SPAN =
LANG=3D"en-us"> </SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT COLOR=3D"#1F497D" =
FACE=3D"Arial">&nbsp;</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><B></B></SPAN><B><SPAN =
LANG=3D"en-us"><FONT COLOR=3D"#1F497D" =
FACE=3D"Arial">ONStor</FONT></SPAN></B><SPAN LANG=3D"en-us"></SPAN><SPAN =
LANG=3D"en-us"></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT COLOR=3D"#1F497D" =
FACE=3D"Arial">Schleussner Str. 42</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT COLOR=3D"#1F497D" =
FACE=3D"Arial">D-63263 Neu-Isenburg</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"></SPAN><SPAN LANG=3D"en-us"><FONT =
COLOR=3D"#1F497D" FACE=3D"Arial">Germany</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT COLOR=3D"#1F497D" =
FACE=3D"Arial">&nbsp;</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><B></B></SPAN><B><SPAN =
LANG=3D"en-us"><FONT COLOR=3D"#1F497D" =
FACE=3D"Arial">telf.</FONT></SPAN></B><SPAN =
LANG=3D"en-us"><B></B></SPAN><SPAN LANG=3D"en-us"><B></B></SPAN><B><SPAN =
LANG=3D"en-us"><FONT COLOR=3D"#1F497D" SIZE=3D2 =
FACE=3D"Arial">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT></SPAN></B><SPA=
N LANG=3D"en-us"><B></B></SPAN><SPAN =
LANG=3D"en-us"><B></B></SPAN><B><SPAN LANG=3D"en-us"> <FONT =
COLOR=3D"#1F497D" SIZE=3D1 FACE=3D"Arial">+49 6102 884 =
84-0</FONT></SPAN></B><SPAN LANG=3D"en-us"></SPAN><SPAN =
LANG=3D"en-us"></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><B></B></SPAN><B><SPAN =
LANG=3D"en-us"><FONT COLOR=3D"#1F497D" FACE=3D"Arial">mobil. =
&nbsp;&nbsp;&nbsp;</FONT></SPAN></B><SPAN =
LANG=3D"en-us"><B></B></SPAN><SPAN LANG=3D"en-us"><B></B></SPAN><B><SPAN =
LANG=3D"en-us"> <FONT COLOR=3D"#1F497D" SIZE=3D1 FACE=3D"Arial">+49 173 =
673 3434</FONT></SPAN></B><SPAN LANG=3D"en-us"></SPAN><SPAN =
LANG=3D"en-us"></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><B></B></SPAN><B><SPAN =
LANG=3D"en-us"><FONT COLOR=3D"#1F497D" =
FACE=3D"Arial">mail.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT></SPAN></B=
><SPAN LANG=3D"en-us"> </SPAN><A =
HREF=3D"mailto:steffen.thuemmel@onstor.com"><SPAN =
LANG=3D"en-us"><B><U></U></B></SPAN><B><U><SPAN LANG=3D"en-us"><FONT =
COLOR=3D"#0000FF" =
FACE=3D"Arial">steffen.thuemmel@onstor.com</FONT></SPAN></U></B><SPAN =
LANG=3D"en-us"></SPAN></A><SPAN LANG=3D"en-us"></SPAN><SPAN =
LANG=3D"en-us"></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><B></B></SPAN><B><SPAN =
LANG=3D"en-us"><FONT COLOR=3D"#1F497D" =
FACE=3D"Arial">web.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT></SPAN></B>=
<SPAN LANG=3D"en-us"> </SPAN><A HREF=3D"http://www.onstor.com/"><SPAN =
LANG=3D"en-us"><B><U></U></B></SPAN><B><U><SPAN LANG=3D"en-us"><FONT =
COLOR=3D"#0000FF" =
FACE=3D"Arial">www.onstor.com</FONT></SPAN></U></B><SPAN =
LANG=3D"en-us"></SPAN></A><SPAN LANG=3D"en-us"></SPAN><SPAN =
LANG=3D"en-us"></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT COLOR=3D"#1F497D" =
FACE=3D"Arial">&nbsp;</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"></SPAN><SPAN =
LANG=3D"en-us"></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"></SPAN><SPAN LANG=3D"en-us"><FONT =
SIZE=3D2 =
FACE=3D"Tahoma">_____________________________________________<BR>
</FONT></SPAN><SPAN LANG=3D"en-us"><B></B></SPAN><SPAN =
LANG=3D"en-us"><B><FONT SIZE=3D2 =
FACE=3D"Tahoma">From:</FONT></B></SPAN><SPAN LANG=3D"en-us"></SPAN><SPAN =
LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Tahoma"> Tim O'Callaghan<BR>
</FONT></SPAN><SPAN LANG=3D"en-us"><B></B></SPAN><SPAN =
LANG=3D"en-us"><B><FONT SIZE=3D2 =
FACE=3D"Tahoma">Sent:</FONT></B></SPAN><SPAN LANG=3D"en-us"></SPAN><SPAN =
LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Tahoma"> Mittwoch, 24. Januar 2007 =
23:53<BR>
</FONT></SPAN><SPAN LANG=3D"en-us"><B></B></SPAN><SPAN =
LANG=3D"en-us"><B><FONT SIZE=3D2 =
FACE=3D"Tahoma">To:</FONT></B></SPAN><SPAN LANG=3D"en-us"></SPAN><SPAN =
LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Tahoma"> dl-se; dl-cstech<BR>
</FONT></SPAN><SPAN LANG=3D"en-us"><B></B></SPAN><SPAN =
LANG=3D"en-us"><B><FONT SIZE=3D2 =
FACE=3D"Tahoma">Subject:</FONT></B></SPAN><SPAN =
LANG=3D"en-us"></SPAN><SPAN LANG=3D"en-us"><FONT SIZE=3D2 =
FACE=3D"Tahoma"> Limits</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"></SPAN><SPAN LANG=3D"en-us"><FONT =
SIZE=3D2 FACE=3D"Arial">What is the largest volume currently being =
mirrored?</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Are =
there any known issues mirroring very large volumes?</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 =
FACE=3D"Arial">Tim</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"></SPAN><SPAN =
LANG=3D"en-us"></SPAN><SPAN LANG=3D"en-us"><FONT COLOR=3D"#000080" =
SIZE=3D2 FACE=3D"Arial">Tim O&#8217;Callaghan</FONT></SPAN><SPAN =
LANG=3D"en-us"></SPAN><SPAN LANG=3D"en-us"></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"></SPAN><SPAN =
LANG=3D"en-us"></SPAN><SPAN LANG=3D"en-us"><FONT SIZE=3D2 =
FACE=3D"Arial">Senior S.E. (EMEA)</FONT></SPAN><SPAN =
LANG=3D"en-us"></SPAN><SPAN LANG=3D"en-us"></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><B></B></SPAN><SPAN =
LANG=3D"en-us"><B></B></SPAN><B><SPAN LANG=3D"en-us"><FONT SIZE=3D2 =
FACE=3D"Arial">M + 44 7767435472</FONT></SPAN></B><SPAN =
LANG=3D"en-us"></SPAN><SPAN LANG=3D"en-us"></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><B></B></SPAN><SPAN =
LANG=3D"en-us"><B></B></SPAN><B><SPAN LANG=3D"en-us"><FONT SIZE=3D2 =
FACE=3D"Arial">EMAIL</FONT></SPAN></B><SPAN LANG=3D"en-us"></SPAN><SPAN =
LANG=3D"en-us"></SPAN><SPAN LANG=3D"en-us"><FONT SIZE=3D2 =
FACE=3D"Arial"></FONT></SPAN><SPAN LANG=3D"en-us"></SPAN><SPAN =
LANG=3D"en-us"></SPAN><SPAN LANG=3D"en-us"> <FONT SIZE=3D2 =
FACE=3D"Tahoma">&#8211;</FONT></SPAN><SPAN LANG=3D"en-us"></SPAN><SPAN =
LANG=3D"en-us"></SPAN><SPAN LANG=3D"en-us"><FONT SIZE=3D2 =
FACE=3D"Arial"></FONT></SPAN><SPAN LANG=3D"en-us"> </SPAN><A =
HREF=3D"mailto:tim.ocallaghan@onstor.com"><SPAN =
LANG=3D"en-us"></SPAN><SPAN LANG=3D"en-us"><U></U></SPAN><U><SPAN =
LANG=3D"en-us"><FONT COLOR=3D"#0000FF" SIZE=3D2 =
FACE=3D"Arial">tim.ocallaghan@onstor.com</FONT></SPAN></U><SPAN =
LANG=3D"en-us"></SPAN></A><SPAN LANG=3D"en-us"></SPAN><SPAN =
LANG=3D"en-us"></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><B></B></SPAN><SPAN =
LANG=3D"en-us"><B></B></SPAN><B><SPAN LANG=3D"en-us"><FONT =
COLOR=3D"#000080" SIZE=3D2 FACE=3D"Arial">ON</FONT></SPAN></B><SPAN =
LANG=3D"en-us"><B></B></SPAN><SPAN LANG=3D"en-us"><B></B></SPAN><B><SPAN =
LANG=3D"en-us"><FONT COLOR=3D"#FFFF00" SIZE=3D2 FACE=3D"Arial">Stor, =
Ltd.</FONT></SPAN></B><SPAN LANG=3D"en-us"></SPAN><SPAN =
LANG=3D"en-us"></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><B><I></I></B></SPAN><SPAN =
LANG=3D"en-us"><B><I></I></B></SPAN><B><I><SPAN LANG=3D"en-us"><FONT =
COLOR=3D"#000080" SIZE=3D2 FACE=3D"Arial">NAS for the =
Enterprise</FONT></SPAN></I></B><SPAN LANG=3D"en-us"></SPAN><SPAN =
LANG=3D"en-us"></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"></SPAN><SPAN =
LANG=3D"en-us"></SPAN><SPAN LANG=3D"en-us"><FONT SIZE=3D2 =
FACE=3D"Arial">1201 Parkview Business Park<BR>
Theale Reading<BR>
UK<BR>
RG7 4TY</FONT></SPAN><SPAN LANG=3D"en-us"></SPAN><SPAN =
LANG=3D"en-us"></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"></SPAN><A =
HREF=3D"http://www.onstor.com"><SPAN LANG=3D"en-us"></SPAN><SPAN =
LANG=3D"en-us"><U></U></SPAN><U><SPAN LANG=3D"en-us"><FONT =
COLOR=3D"#0000FF" SIZE=3D2 =
FACE=3D"Arial">www.onstor.com</FONT></SPAN></U><SPAN =
LANG=3D"en-us"></SPAN></A><SPAN LANG=3D"en-us"></SPAN><SPAN =
LANG=3D"en-us"></SPAN></P>

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