Installation manual

Adding a Direct Volume
Selecting a VPU (optional)
8-22 CLI Storage-Management Guide
Assigning the Volume to a VPU
The default-VPU assignment algorithm can artificially limit the maximum number of
namespaces on your ARX. Consider the above example with a single ASM.
According to Table 8-1, the single ASM has two VPUs and can therefore support up
to four namespaces. However, if the namespace volumes are enabled from left to right
(as above), the first two namespaces claim both VPUs before any of namespace C’s
volumes get enabled. The volumes in namespace C can therefore never be enabled.
You can avoid this problem by manually assigning all of the volumes in namespaces
A and B to VPU 1, thereby leaving both halves of VPU 2 free for namespace C.
From gbl-ns-vol mode, use the
vpu command to assign the volume to a VPU:
vpu id
where id (1-6) identifies the VPU.
namespace B
volume 3 volume 5volume 4
namespace C
volume 6 volume 7
namespace A
volume 2volume 1
VPU 1
VPU 2
namespace B
volume 3 volume 5volume 4
namespace C
volume 6 volume 7
namespace A
volume 2volume 1
VPU 1
VPU 2