HP StoreOnce Backup System Linux and UNIX Configuration Guide (BB852-90952)

The NFS device should be mounted using the following options explicitly to mount the StoreOnce

Backup System using NFSv3 and force synchronous transfer:

localhost:~ $ mount -o forcedirectio,vers=3 X.X.X.X:/nas/<name of share>

Using the following syntax, verify the mount point which lists the local mount, the remote mount,

and the parameters that the target device has been mounted with:

localhost:~ $ mount -v

The output will be similar to the following:

16.24.160.141:/nas/Share_1 on /mnt/nfs type nfs

forcedirectio,rsize=32768,wsize=32768,NFSv3,dev=4000003 on Fri Apr 26

12:45:53 2013

Controlling an iSCSI or Fibre Channel HP StoreOnce Backup System using

HP-UX

The HP StoreOnce Backup System appears to the HP-UX operating system as a changer device

and Ultrium tape drive. The changer device represents the robotics within the library and can be

controlled from the console using a command called MC. The complete MC manual can also be

accessed using the command man mc.

The following examples illustrate how to complete common tasks with the HP StoreOnce Backup

System.

• Review the media

• Load a cartridge into the tape drive

• Unload a cartridge from the tape drive

• Move a cartridge to the mail slot

• Move a cartridge from the mail slot

Using large block sizes with HP-UX 11i v2

A block size no larger than 256 KB (262144 bytes) is strongly recommended when working with

HP-UX 11i v2 and tape or VTL devices. Backup applications should be configured to work with

I/O block sizes that are no larger than 256 KB. Please check your application documentation to

find out how to check or configure block sizes used for transfers to and from tape or VTLdevices.

Block sizes no larger than 256 KB (262144 bytes) are recommended with HP-UX 11i v2 because,

by default, the HP-UX stape driver processes a block size larger than 256 KB by subdividing it

into 256 KB blocks for writing to tape (giving a net effect of 256 KB I/O transfers). During restore,

stape attempts to reconstruct the original block size that was larger than 256 KB with the 256

KB blocks from tape. This subdivision and subsequent reconstruction process of block sizes larger

than 256 KB adds unnecessary complexity and risk to tape positioning and restore operations and

offers no net gain in terms of increased block size. It should, therefore, be avoided.

Reviewing the media in a library

To verify the contents of the media slots within a library, the following command should be used:

# mc –p /dev/rac/c9t0d0 –rDSI

DT_slot_1 EMPTY

ST_slot_1:Full 72255101

ST_slot_2:Full 72255102

ST_slot_3:Full 72255103

ST_slot_4:Full 72255104

ST_slot_5:Full 72255105

ST_slot_6:Full 72255106

Controlling an iSCSI or Fibre Channel HP StoreOnce Backup System using HP-UX 23