Seagate ST34572WC Spécifications télécharger pdf (Page 14)

For a version 2.x VG, enter:

xd -j 0x21a4 -t uI -N 4 /dev/dsk/c0t3d0

In this example, this is a version 1.0 VG.

# xd -j 0x2048 -t uI -N 4 /dev/dsk/c0t3d0

0000000 1024

0000004

# xd -j 0x2048 -t uI -N 4 /dev/dsk/c1t3d0

0000000 1024

0000004

4. Calculate the location of the physical extent for each PV. Multiply the PE number by the PE size

and then by 1024 to convert to Kb:

2 * 32 * 1024 = 65536

Add the offset to PE zero:

65536 + 1024 = 66560

5. Enter the following dd commands:

# dd bs=1k skip=66560 count=32768 if=/dev/rdsk/c0t3d0 of=/dev/null &

# dd bs=1k skip=66560 count=32768 if=/dev/rdsk/c1t3d0 of=/dev/null &

Note the value calculated is used in the skip argument. The count is obtained by multiplying

the PE size by 1024.

Note : The previous example recommends running the dd command in the background (by

adding & at the end of the command) because you do not know if the dd command will hang

when it does the read. If the dd command is run in the foreground, Ctrl+C stops the read on the

disk.

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Seagate ST34572WC Spécifications Page 14