Hi Terry,

We were receiving a huge amount ( > 4 / day).  We had datalink run extensive
diags on our tape drives (DLT 7k), and it turned out there
was an issue with 3 of them.  Since they have been replaced (2 weeks ago),
there has not been 1 status 84. 

-----Original Message-----
From: Spicuzza, Terry G
To: 'veritas-bu AT mailman.eng.auburn DOT edu'
Sent: 6/18/01 8:10 PM
Subject: [Veritas-bu] Status 84's

Question regarding status 84, is there anyone out there that has
experienced
a high volume of 84's on .

Here is the tape SAN configuration:

HP-UX 11.00
NBU 3.2, Patch J0820443
STK L700
9840 Fiber Drives with 1.28.122 microcode
Brocade/STK Silkworm 2800 with Fabric O/S 2.1.5a
NBU SSO 3.2
HBA HP PCI Tachyon TL A5158A rel B.11.00.03


Here is the situation.  We are receiving numerous status 84's on backups
which involve the tape SAN.  Now, I know there isn't a problem with the
tapes or drives.  Some of the backups are receiving the 84 without
backing
up any data.  This error also occurs when a tape has ended and a new one
is
mounted in the middle of a backup.

Question:  When NBU needs a new tape to continue a backup, where is the
data
that is being sent buffered at?

Our data buffers on the servers are at the default of 32k and the switch
has
a 2 meg buffer for each port.  Is this enough buffering to swap out a
tape
and bring in a new one.

Thank you,

Terry

> Terry Spicuzza
> Ext. 5626
> 
 <<Spicuzza, Terry G.vcf>> 
 <<Spicuzza, Terry G.vcf>>