• Subject: RE: Date Last used
  • From: Walden Leverich <walden@xxxxxxxxxxxxxxx>
  • Date: Sat, 30 Jan 1999 16:54:23 -0500

I thought the limit was not "a little less that 100%" so that there will
always be enough space to allow the machine to IPL. Is this space counted
already in the usage stats?

-Walden

-----Original Message-----
From: R. Bruce Hoffman, Jr. [mailto:rbruceh@ibm.net]
Sent: Thursday, January 28, 1999 8:29 AM
To: MIDRANGE-L@midrange.com
Subject: Re: Date Last used




eric wrote:

> The limit being what 90%.  Isn't the IBM recommended not to exceed usage
80%?
>

THE limit is 100%.  There is a threshold value in System Service Tools
(STRSST)
that  can be set by the user.  The recommended disk usage is based on
performance, maintaining seeks to < 2/3 of disk.  On systems with large
amounts
of DASD (> 50GB) and many small files, I have successfully operated machines
with
the threshold set at 97% and 98%.  Note I said successfully operated.  I did
not
say efficiently.

The major consequence of exceeding the threshold, especially when it is set
to a
low value, is that SNADS stops.  Of course, continuing to add "stuff" to the
system after the threshold is reached has other consequences, ranging from
sluggish systems to power off.

--
===========================================================
R. Bruce Hoffman, Jr. -- IBM Certified AS/400 Administrator

-- The sum of all human knowledge is a fixed constant.
    It's the population that keeps growing!


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