ADSM-L

Re: 2 Gb limitation now lifted

1997-01-07 17:08:28
Subject: Re: 2 Gb limitation now lifted
From: Dianne Sharp <DSHARP AT CLEAR.CO DOT NZ>
Date: Wed, 8 Jan 1997 11:08:28 +1300
What about HP Unix and SGI IRIX?  Does this limitation still exist for
those clients?

Dianne Sharp
Operations Analyst
ISS CUSTOMER SUPPORT
Ext 4208

>----------
>From:  Mj Lopatin[SMTP:lopatin AT VNET.IBM DOT COM]
>Sent:  Wednesday, 08 January, 1997 7:47AM
>To:    Multiple recipients of list ADSM-L
>Subject:       2 Gb limitation now lifted
>
>Let me try to clarify the 2 gigabyte file limitation, which has now
>been lifted with client PTF 6:
>
>There was both a client restriction and a server restriction that prevented
>the ADSM backup/archive clients from backing up/restoring files >= 2
>gigabytes
>on platforms that supported files of that size.  The server problem was
>fixed about six months ago.  The clients have now been redesigned with PTF 6
>and the 2 Gb client restriction has been lifted on most platforms that
>support files greater than 2 gigabytes.
>
>The following b/a clients now support files 2 Gb or greater with PTF 6:
>    AIX 4.2, Novell NetWare, Digital UNIX, and Windows NT.
>
>In addition, we had a problem with the client backup statistics, where
>once you backed up more than 4 Gigabytes on platforms that allowed that, your
>statistics wrapped back to 0.  That problem was also fixed in client PTF 6.
>
>Client PTF 6 is available now on the anonymous FTP server and its shadow
>sites,
>(index.storsys.ibm.com), and will be available on media this month.
>
>One note: certain operating systems such as Windows 16-bit and Mac,
>cannot give accurate information to applications such as ADSM about
>files larger than 2 gigabytes.  We recommend that you do not remote-mount
>files
>greater than 2 gigabytes from clients other than the four that support > 2
>Gb.
>While ADSM will attempt to prevent a backup of these files, we are at the
>mercy of the operating system information, and a 2.2 Gb file may be reported
>to us by the operating system as a 200 Mb file, so we may try to back it up
>and then fail, on platforms that do not support > 2 Gb files.
>
>MJ Lopatin
>ADSM Client Development
>
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