Comments on: Provisioning Server 5.1 High Availability Tips

By: Jarian Gibson

Jarian Gibson — Thu, 17 Sep 2009 02:40:09 +0000

Good points Roger. I mainly user Target HD for write cache and have only used memory a few times. It’s fast but if you need a lot of write cache then it’s not the way to go. Nice point on the NetScaler Bart. I forgot about that. It’s nice if they have NetScaler in place but most places i’ve done implementations in use DNS round robin. With the release of NetScaler VPX Express I am going to push more on using NetScaler.

By: Roger Birong, Jr.

Roger Birong, Jr. — Wed, 16 Sep 2009 14:32:08 +0000

Excellent thought. I’ve added it to the post as well. Thank You.

By: Bart Groot Zevert

Bart Groot Zevert — Wed, 16 Sep 2009 14:28:37 +0000

I you have a netscaler in place, you can also use that to make your TFTP service high available.

By: Roger Birong, Jr.

Roger Birong, Jr. — Wed, 16 Sep 2009 14:03:07 +0000

RE: Target Device RAM WC
It’s really dependent on the environment – we have people with Write Cache files approaching 3GB. I’m not sure too many people want to allocate that much memory to a user when spinning disks are so much cheaper than RAM. But I agree, it is the fastest solution, but I see Target HD being more economical for most deployments.

By: Jarian Gibson

Jarian Gibson — Wed, 16 Sep 2009 02:19:21 +0000

Nice article. Any reason why write cache stored on target RAM is not in play? It can be limit RAM depending on if using 32bit or 64bit, but is very fast for write cache.