Without going too far into it, and trying to save a little bit of money...
Raid 0+1 requires 4 drives... Two mirrored pairs (each pair acting like a
single drive, that's the raid 0 part) striped together (that's the raid 1
part).
Put that on the one controller and install your OS and IMail there.
Add one additional drive on the other controller for your swap file.
If you want to go a bit further, put in another drive and move IMail's spool
to that one - again, on the second controller.
In practice, you can get away with putting everything on the original 4
drives in the 0+1 configuration,... then spend the additional money on RAM
to keep the OS from _EVER_ swapping to disk.
MHO,
_M
| -----Original Message-----
| From: [EMAIL PROTECTED]
| [mailto:[EMAIL PROTECTED]]On Behalf Of Kris McElroy
| Sent: Thursday, May 24, 2001 9:27 PM
| To: [EMAIL PROTECTED]
| Subject: Re: [IMail Forum] Configuration
|
|
| This is what I thought, though I am unclear on the raid 0, + raid 1. For
| instance how many hard drives total would you recommend? If I have two
| controllers how would I partition the applications such as the OS, IMAIL
| (spool), Imail (users)? I figure that I would use 6 total two drives
| running raid 0,1 on one controller for the spool, two drives running raid
| 0,1 on the second controller for the users, and finally I would
| use a raid 0
| for the OS?? Am I seeing this correctly or not?
|
|
| Thanks for all your help.
|
|
| Kris McElroy
|
|
|
|
| ----- Original Message -----
| From: "Len Conrad" <[EMAIL PROTECTED]>
| To: <[EMAIL PROTECTED]>
| Sent: Thursday, May 24, 2001 3:05 PM
| Subject: Re: [IMail Forum] Configuration
|
|
| >
| > >We are going to implement new email servers. For performance and fault
| > >tolerance what would be the best way to configure you hard disks?
| >
| > I�d go with RAID 0 striping + RAID 1 mirroring rather than
| RAID5, for mail
| i/o.
| >
| > > I also remember something that Len had wrote in the list a long time
| > > ago about how to install IMAIL for performance (put spool directory on
| > > separate drive and users on the other)??
| >
| > yep, you got it, and separate disks on separate controllers for
| spool and
| > for mailbox storage.
| >
| > And plenty of memory to avoid swapping. swap file on a dedicatd
| > partition. but better to minimize swapping with huge memory.
| >
| > And keep you spool directory "clean" of old files since file
| searching in
| > the spool directory when the directory had 100�s or 1000�s of
| files really
| > slows down searching.
| >
| > Len
| >
| >
| > http://MenAndMice.com/DNS-training
| > http://BIND8NT.MEIway.com : ISC BIND 8.2.4 for NT4 & W2K
| > http://IMGate.MEIway.com : Build free, hi-perf, anti-abuse
| mail gateways
| >
| >
| > Please visit http://www.ipswitch.com/support/mailing-lists.html
| > to be removed from this list.
| >
| > An Archive of this list is available at:
| > http://www.mail-archive.com/imail_forum%40list.ipswitch.com/
| >
|
|
| Please visit http://www.ipswitch.com/support/mailing-lists.html
| to be removed from this list.
|
| An Archive of this list is available at:
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|
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