The following optional features are available for IBM SAN Volume Controller model SV1: Important:  IBM SAN Volume Controller nodes model 2145-SV1 and 2145-DH8 can  contain a 16 Gb FC or a 10 Gb Ethernet adapter, but only one 10 Gbps Ethernet adapter is  supported. The comparison of current and outdated models of SVC is shown in Table 2-2. Expansion  enclosures are not included in the list. The IBM SAN Volume Controller expansion enclosure consists of enclosure and drives. Each  enclosure contains two canisters that can be replaced and maintained independently. The  IBM SAN Volume Controller supports three types of expansion enclosure. The expansion  enclosure models are 12F, 24F, and 92F dense drawers. The expansion enclosure model 12F features two expansion canisters and holds up to 12  3.5-inch SAS drives in a 2U, 19-inch rack mount enclosure. The expansion enclosure model 24F supports up to 24 internal flash drives, 2.5-inch SAS  drives or a combination of them. The expansion enclosure 24F also features two expansion  canisters in a 2U, 19-inch rack mount enclosure. The expansion enclosure model 92F supports up to 92 3.5-inch drives in a 5U, 19-inch  rack-mounted enclosure. Also, it is called dense expansion drawers, or just  dense drawers. Chapter 2. System overview  15 Table 2-2 Historical overview of SVC models The following optional features are available for IBM SAN Volume Controller model DH8: GLYPH<SM590000> 256 GB Cache Upgrade fully unlocked with code V8.2 GLYPH<SM590000> Four-port 16 Gb FC adapter card for 16 Gb FC connectivity GLYPH<SM590000> Four-port 10 Gb Ethernet adapter card for 10 Gb iSCSI/FCoE connectivity GLYPH<SM590000> Compression accelerator card for IBM Real-time Compression GLYPH<SM590000> Four-port 12 Gb SAS expansion enclosure attachment card GLYPH<SM590000> Additional Processor with 32 GB Cache Upgrade GLYPH<SM590000> Four-port 16 Gb FC adapter card for 16 Gb FC connectivity GLYPH<SM590000> Four-port 10 Gb Ethernet adapter card for 10 Gb iSCSI/FCoE connectivity GLYPH<SM590000> Compression accelerator card for IBM Real-time Compression GLYPH<SM590000> Four-port 12 Gb SAS expansion enclosure attachment card Model Cache [GB] FC [Gbps] iSCSI [Gbps] HW base Announced 2145-4F2 4 2 N/A x335 02 Jun 2003 2145-8F2 8 2 1 x336 25 Oct 2005 2145-8F4 8 4 1 x336 23 May 2006 2145-8G4 8 4 1 x3550 22 May 2007 2145-8A4 8 4 1 x3550 M2 28 Oct 2008 2145-CF8 24 8 1 x3550 M2 20 Oct 2009 2145-CG8 24 8 1, optional 10 x3550 M3 09 May 2011 2145-DH8 32 up to 64 8 and 16 1, optional 10 x3550 M4 06 May 2014 2145-SV1 64 up to 256 16 10 Xeon E5 v4 23 AUG 2016 2147-SV1 64 up to 256 16 10 Xeon E5 v4 23 AUG 2016