Boot-from-SAN thingie kind of spooked me, but maybe because I have never been in an 
environment that used it.


-----Original Message-----
From: Roger Seielstad [mailto:[EMAIL PROTECTED] 
Sent: Friday, January 09, 2004 1:44 PM
To: Exchange Discussions
Subject: RE: Location of Transaction Logs

Yo, Tony! I see you survived the trip back from Orlando...

If I remember correctly, you can bypass caching at the RAID group (not the
LUN) level through Navisphere. I don't currently have access to mine to
check, but I know I asked that question. 

Another option is to change the read/write cache percentage to be mostly
read caching and reduce the potential exposure.

I'd suggest skipping boot-from-SAN, but that's just me. The only reason I'd
see boot-from-SAN helping is if you are going to have identical cold standby
hardware available to replace in the case of system failure. I'm not sure
you want to use non-identical hardware for cold spares in that kind of case.

Roger
--------------------------------------------------------------
Roger D. Seielstad - MTS MCSE MS-MVP
Sr. Systems Administrator
Inovis Inc.


> -----Original Message-----
> From: Anthony Sollars [mailto:[EMAIL PROTECTED] 
> Sent: Friday, January 09, 2004 12:11 PM
> To: Exchange Discussions
> Subject: Location of Transaction Logs
> 
> 
> 
> Hello all,
> 
> ����������� 
> ����������� We are planning a global Exchange upgrade here to 
> 2003 and are
> researching an issue that an email admin here is having with 
> the location of
> the Transaction logs in our new Exchange Architecture. We are 
> planning to
> Deploy Quad-proc servers that are boot-to-SAN on an EMC 
> Clarion CX600. The
> OS, Logs and DATA will be stored on the SAN. The problem is 
> we are not sure
> if the transaction log data will be secure in the case of 
> server outage,
> since the SAN utilizes a very hefty cache before it writes 
> the data to SAN
> disk. We have already begun queuing our SAN vendor and MS, 
> but they do take
> awhile in complex questions such as these, I was wondering if 
> anyone in the
> list has deployed Exchange 200x on a SAN and has come across 
> this question?
> 
> Thanks again,
> 
> Anthony L. Sollars��������������������______________
> Technology Consultant
> Information Technology Division, PACCAR Inc.
> 
> 
> 
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