Jim Lane wrote:
>I guess today is "confusion day". another thing I'm confused about is
>what's the right way to handle backing up data from a NetWare client
>that is stored using software compression by NetWare itself? the problem
>case is a large file server. it has about 170GB of compressed data
>consisting of about 1,000,000 smallish files. the backup of this monster
>is painfully slow and I'm wondering if I'm uncompressing and
>recompressing data along the way.
Check your directives. If you are using "netware with comopression
directives", change that to "netware standard directives".
Another problem is that it has proven impossible to get Legato to
understand that they have to increase the buffer size for the TCP
connection. They won't use anything but the default. That means that you
will be in big doodoo if your server uses an oldish gigE card. The server
wants a buffer size of around 60KB, Legato Networker uses around 10KB (+/-
6KB). That can be disastrous for the backup performance.
It is amazing that a company who lives or dies on the network performance
of their product can be so ignorant about the consequences of not
optimizing the network performance.
This means that a transition to 10gigE might be painful.
>am I correct in assuming
>that Networker is treating a client like this as a logical backup, ie
>opening, reading and closing each file as it goes along? back in the
>good old days (mainframes) the ugly scalability of something like this
>was dealt with by "physical backups", ie copying data in track and
>cylinder images without regard to the logical layout. is there any
>equivalent of this nowadays?
You are supposed to be able to do an image backup. I don't know how since
I've never used it.
greetings,
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