new installation on Xen VM

[btietjens]

Dear Madams dear Sirs,

we are thinking about considering ZCS OpenSourceEdition for our company
collaboration.
Which release do you recommend?

Can we license and use the Modules: "Zimbra Archiving and Discovery",
"Zimbra Collaboration Suite Mobility" and "Zimbra Mobile for iPhone" on
top of the free community edition?


Why is RAID-5 not recommended for installations with more than 100
accounts ?

What MB/sec do we need to be able to write/read to disk ?

We are planning to run ZCS in a xen-vm on top of RAID-5, does the
restriction concerning RAID-5 also apply for this setting?

At the moment the RAID is readable with:
/dev/sdb:
Timing cached reads: 22944 MB in 1.99 seconds = 11507.87 MB/sec
Timing buffered disk reads: 516 MB in 3.01 seconds = 171.55
MB/sec


Thanx for your help.

Cheers
B. Tietjens

[phoenix]

Originally Posted by btietjens

Why is RAID-5 not recommended for installations with more than 100 accounts ?

It's not really recommended at all but for 100 users or less the performance loss may be acceptable to you. It's also very easy to lose all your data on a disk failure(s) (yes, I do know about hot spares) but my recommendation for performance would be a RAID10 solution, do search the forums for some other recommended configurations.

[Klug]

Xen is not officially supported either.