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We have implemented an Adaptec Durastor External Fibre disk array. We
mainly use it to temporarily hold backup images, until they can be
duplicated to tape. This was implemented to increase the number of
concurrent jobs that can run, which is important in our environment because
we do not mulitplex. So now the number of active jobs is nolonger limited
by the number of tape drives. Additionally, we don't have to worry about
media errors or drive problems slowing down backups or causing a retry.
Over the last 3 months, which is how long this solution has been in place, I
have not experienced any errors writing to disk. We still get some some
media errors when duplicating to tape, but these occur outside of the backup
window. Previously (without multiplexing) we were not able to backup to the
tape drives at max speed, for the exception of about 10% of our servers.
But, when duplicating from disk to tape, we are writing at max tape drive
speed, which is about 5mb/sec for our DLT 7000 drives.
If you are looking to permanently store images on a disk, the Adaptec
Durastor will most likely not meet your scalability, performance, or
redundancy requirements.
Ebon Nash
-----Original Message-----
From: Schaefer, Harry [mailto:Harry.Schaefer AT turner DOT com]
Sent: Wednesday, May 14, 2003 6:52 PM
To: veritas-bu AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] Disk Based Storage
Has anyone out here implemented an ATA disk solution to do disk backups with
DataCenter 4.5? If so I would be interested in feedback. We are considering
both the STK BladeStore and the NetApp NearStore. Also, we have an all
Solaris master/media environment...
Harry S.
Atlanta
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<META HTTP-EQUIV=3D"Content-Type" CONTENT=3D"text/html; =
charset=3Diso-8859-1">
<TITLE>Disk Based Storage</TITLE>
<META content=3D"MSHTML 6.00.2800.1141" name=3DGENERATOR></HEAD>
<BODY>
<DIV><FONT face=3DArial><FONT color=3D#0000ff><FONT size=3D2><SPAN=20
class=3D971005312-15052003>We have implemented an Adaptec Durastor =
External Fibre=20
disk array. We mainly use it to temporarily hold backup images, =
until they=20
can be duplicated to tape. This was implemented to increase the =
number of=20
concurrent jobs that can run, which is important in our environment =
because we=20
do not mulitplex. So now the number of active jobs is =
nolonger=20
limited by the number of tape drives. Additionally, we don't have =
to worry=20
about media errors or drive problems slowing down backups or causing a=20
retry. Over the last 3 months, which is how long this =
solution</SPAN>=20
<SPAN class=3D971005312-15052003>has been in place, I have not =
experienced any=20
errors writing to disk. We still get some some media errors when=20
duplicating to tape, but these occur outside of the backup =
window. =20
Previously (without multiplexing) we were not able to backup to =
the tape=20
drives at max speed, for the exception of about 10% of our =
servers. But,=20
when duplicating from disk to tape, we are writing at max tape drive =
speed,=20
which is about 5mb/sec for our DLT 7000=20
drives.</SPAN></FONT></FONT></FONT></DIV>
<DIV><FONT face=3DArial><FONT color=3D#0000ff><FONT size=3D2><SPAN=20
class=3D971005312-15052003></SPAN></FONT></FONT></FONT> </DIV>
<DIV><FONT face=3DArial><FONT color=3D#0000ff><FONT size=3D2><SPAN=20
class=3D971005312-15052003>If you are looking to permanently store =
images on a=20
disk, the Adaptec Durastor will most likely not meet your scalability,=20
performance, or redundancy =
requirements.</SPAN></FONT></FONT></FONT></DIV>
<DIV><FONT face=3DArial><FONT color=3D#0000ff><FONT size=3D2><SPAN=20
class=3D971005312-15052003></SPAN></FONT></FONT></FONT> </DIV>
<DIV><FONT face=3DArial><FONT color=3D#0000ff><FONT size=3D2><SPAN=20
class=3D971005312-15052003></SPAN></FONT></FONT></FONT> </DIV>
<DIV><FONT face=3DArial><FONT color=3D#0000ff><FONT size=3D2><SPAN=20
class=3D971005312-15052003>Ebon Nash</SPAN></FONT></FONT></FONT></DIV>
<DIV><FONT face=3DArial><FONT color=3D#0000ff><FONT size=3D2><SPAN=20
class=3D971005312-15052003></SPAN></FONT></FONT></FONT> </DIV>
<DIV><FONT face=3DArial><FONT color=3D#0000ff><FONT size=3D2><SPAN=20
class=3D971005312-15052003></SPAN></FONT></FONT></FONT> </DIV>
<DIV><FONT face=3DArial><FONT color=3D#0000ff><FONT size=3D2><SPAN=20
class=3D971005312-15052003> </SPAN></FONT></FONT></FONT><FONT =
face=3DTahoma=20
size=3D2>-----Original Message-----<BR><B>From:</B> Schaefer, Harry=20
[mailto:Harry.Schaefer AT turner DOT com]<BR><B>Sent:</B> Wednesday, May 14, =
2003 6:52=20
PM<BR><B>To:</B> veritas-bu AT mailman.eng.auburn DOT edu<BR><B>Subject:</B>=20
[Veritas-bu] Disk Based Storage<BR><BR></DIV></FONT>
<BLOCKQUOTE dir=3Dltr style=3D"MARGIN-RIGHT: 0px">
<P><FONT size=3D2>Has anyone out here implemented an ATA disk =
solution to do=20
disk backups with DataCenter 4.5? If so I would be interested in =
feedback. We=20
are considering both the STK BladeStore and the NetApp NearStore. =
Also, we=20
have an all Solaris master/media environment...</FONT></P>
<P><FONT size=3D2>Harry S.</FONT> <BR><FONT size=3D2>Atlanta</FONT>=20
</P></BLOCKQUOTE></BODY></HTML>
<BR>
<BR>
<BR>
<P><B><FONT SIZE=3D2 FACE=3D"Arial">The contents of this e-mail are =
intended for the named addressee only. It contains information that may =
be confidential. Unless you are the named addressee or an authorized =
designee, you may not copy or use it, or disclose it to anyone else. If =
you received it in error please notify us immediately and then destroy =
it.</FONT></B> </P>
<BR>
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