Figure 2-12 shows how a striped volume is allocated, assuming that 10 extents are  required. A sequential volume is where the extents are allocated one after the other, from one  MDisk to the next MDisk (see Figure 2-13). Image mode volumes are special volumes that have a direct relationship with one MDisk.  They are used to migrate data into and out of the clustered system. GLYPH<SM590000> Image mode GLYPH<SM590000> Sequential  Figure 2-13 Sequential volume Figure 2-12 Striped volume 32  Implementing the IBM Storwize V7000 with IBM Spectrum Virtualize V8.2.1