Help with uda errors

[David R. Hampton]

I am running BSD 4.2 on a VAX 11/785, using the University of Maryland
uda driver.  The modification time on my driver is 19 December 1985.  I
just started seeing numerous uda errors today on one of our three
drives.  These errors are occurring on a RA60 disk pack that is being
used as one large partition.  Most of the errors are soft errors, but
there is an occasional hard error thrown in.  Could someome please
explain to me what they mean.  Thanks much.

P.S.  DEC was just here yesterday for our monthly maintenance visit.  I
had not seen any errors before then.  Could they have changed something
that would cause this?

--------------------------------------------------

uda0: soft error, disk transfer error, unit 1, grp 0x0, hdr 0x3f038,
      event 0313
100040 80239df8 1 cb4102 96e8 1060000 10005 381b 2040000 103 66f55acb
      3f038 60100a8 0 0 0
uda0: soft error, SDI error, unit 1, event 0353, hdr 0x0
100040 80239df8 1 eb4103 96e8 1060000 10005 381b 2040000 103 66f55acb
      0 c0014b 2051700 2f000401 0
uda0: soft error, disk transfer error, unit 1, grp 0x0, hdr 0x4cce8,
      event 0313
100040 8023aa70 1 cb4102 96e8 1060000 10005 381b 2040000 103 66f55acb
      4cce8 40102fd 0 0 0
uda0: soft error, SDI error, unit 1, event 0353, hdr 0x0
100040 8023aa70 1 eb4103 96e8 1060000 10005 381b 2040000 103 66f55acb
      0 c0041b 504c800 2f0004e2 0
uda0: soft error, SDI error, unit 1, event 0353, hdr 0x0
100040 8023a4f8 1 2b4103 96e8 1060000 10005 381b 2040000 103 66f55acb
      0 c0041b 504c800 2f0004e2 0
uda0: hard error, disk transfer error, unit 1, grp 0x0, hdr 0x4cce8,
      event 0313
100040 8023b138 1 cb0102 96e8 1060000 10005 381b 2040000 103 66f55acb
      4cce8 c0041b 2045500 2f000462 0
ra1c: hard error sn314600 status 313

etc, etc.

David R. Hampton
Hampton @ Dockmaster.Arpa
301/859-4537