disk drive failure

System: OSF1 c02.gpc.edu V5.1 732 alpha

I have a local disk drive, dsk8, that failed. Here
are the some of the /var/adm/messages errors:

Jun  8 21:55:15 c02 vmunix: scsi0: HTH intr. on bus 0, SBCL = 0xa7
Jun  8 21:55:55 c02 vmunix: scsi0: SCSI Bus was reset
Jun  8 21:55:57 c02 vmunix: AdvFS I/O error:
Jun  8 21:55:58 c02 vmunix:     Domain#Fileset: rsync2#rsync2
Jun  8 21:55:58 c02 vmunix:     Mounted on: /rsync2
Jun  8 21:55:58 c02 vmunix:     Volume: /dev/disk/dsk8c
Jun  8 21:55:58 c02 vmunix:     Tag: 0x0000177e.8001
Jun  8 21:55:58 c02 vmunix:     Page: 1675
Jun  8 21:55:58 c02 vmunix:     Block: 5819856
Jun  8 21:55:58 c02 vmunix:     Block count: 16
Jun  8 21:55:58 c02 vmunix:     Type of operation: Write
Jun  8 21:55:58 c02 vmunix:     Error: 5
Jun  8 21:55:58 c02 vmunix:     EEI: 0x3400
Jun  8 21:55:58 c02 vmunix:     AdvFS initiated retries: 0
Jun  8 21:55:58 c02 vmunix:     Seconds from first I/O attempt to this failure: 
4194563
Jun  8 21:55:58 c02 vmunix:     Total AdvFS retries on this volume: 0
Jun  8 21:55:58 c02 vmunix:     To obtain the name of the file on which
Jun  8 21:55:58 c02 vmunix:     the error occurred, type the command:
Jun  8 21:55:58 c02 vmunix:       /sbin/advfs/tag2name /rsync2/.tags/6014
Jun  8 21:55:58 c02 vmunix: 
Jun  8 21:55:58 c02 vmunix:     Current setting of AdvfsIORetryControl: 0
Jun  8 21:55:58 c02 vmunix: 
Jun  8 21:55:58 c02 vmunix:     Based on the error returned, it is possible
Jun  8 21:55:58 c02 vmunix:     that some small number of AdvFS initiated
Jun  8 21:55:58 c02 vmunix:     retries may allow this type of error to
Jun  8 21:55:58 c02 vmunix:     succeed.
Jun  8 21:55:58 c02 vmunix: 
Jun  8 21:55:58 c02 vmunix:         /sbin/sysconfig -q advfs AdvfsIORetryControl
Jun  8 21:55:58 c02 vmunix:         /sbin/sysconfig -r advfs AdvfsIORetryControl
=nn
Jun  8 21:55:58 c02 vmunix: 
Jun  8 21:55:58 c02 vmunix:         nn == 0 - No AdvFS retries
Jun  8 21:55:58 c02 vmunix:         1 to  9 - AdvFS will retry up to the
Jun  8 21:55:58 c02 vmunix:                   specified number of times.
Jun  8 21:55:58 c02 vmunix:                   This is in addition to any
Jun  8 21:55:58 c02 vmunix:                   device driver retries.
Jun  8 21:55:59 c02 vmunix: 

I rebooted the system and now I can't find the drive,
either with the hwmgr -scan scsi (didn't really expect
to find it with this) or looking at /dev/rdisk/dsk8c.
Where should I go from here? Thanks!