HP XP20000/XP24000 HP StorageWorks XP Disk Array Mainframe Host Attachment and - Page 8
Connectivity, The same FICON CHAs are used for FICON and FICON/zHPF. The FICON CHAs
![]() |
View all HP XP20000/XP24000 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 8 highlights
Connectivity The storage system supports all-mainframe, all-open-system, and multi-platform configurations. The CHAs process the channel commands from the hosts and manage host access to cache. In the mainframe environment, the channel adapters (CHAs) perform CKD-to-FBA and FBA-to-CKD conversion for the data in cache. Each CHA feature (pair of boards) is composed of one type of host channel interface: FICON/zHPF, Extended Serial Adapter (ExSA) (compatible with ESCON protocol), or Fibre Channel Protocol (FCP). The channel interfaces on each board can transfer data simultaneously and independently. The FICON/zHPF and fibre-channel CHA features are available in shortwave (multimode) and longwave (single-mode) versions. • FICON/zHPF: The same FICON CHAs are used for FICON and FICON/zHPF. The FICON CHAs provide data transfer speeds of up to 400 MB/sec (4 Gbps) and have 8 ports per feature (pair of boards). The CHPID must be set as the FC type in the hardware configuration definition. FICON data transmission rates vary according to configuration: • S/390 Parallel Enterprise Servers - Generation 5 (G5) and Generation 6 (G6) only support FICON at 1 Gbps. • z800 and z900 series hosts have the following possible configurations: • FICON channel will operate at 1 Gbps only. • FICON EXPRESS channel transmission rates will vary according to microcode release. If microcode is 3G or later, the channel will auto-negotiate to set a 1 Gbps or 2-Gbps transmission rate. If microcode is previous to 3G, the channel will operate at 1 Gbps only. • z9 and z10 series hosts have the following possible configurations: • FICON channel will operate at 1/2/4 Gbps (by auto-negotiation process). • FICON EXPRESS4 is supported in z9/z10 series. • FICON channel will auto-negotiate to set a 1 or 2 or 4 Gbps transmission rate. • z10 series and z196 hosts support: • FICON Express8 • FICON channel auto-negotiates to set a 2, 4, or 8 Gbps transmission rate. When configured with shortwave (multimode) FICON CHAs, the storage system can be located according to the following: • Multimode 62.5 um cable: 300m (1 Gbps), 150m (2 Gbps), 75m (4 Gbps) • Multimode 50 um cable: 500m (1 Gbps), 300m (2 Gbps), 150m (4 Gbps) When configured with longwave (single-mode) FICON CHAs, the storage system can be located according to the following: • Single-mode 9 um cable: 10km, 20km with RPQ • ESCON: The ExSA features provide data transfer speeds of up to 17 MB/sec and have 8 ports per feature (pair of boards). Each ExSA channel can be directly connected to a CHPID or a serial channel director. Shared serial channels can be used for dynamic path switching. The storage system also supports the ESCON Extended Distance Feature. • Fibre Channel: Fiber-channel connectivity is supported for IBM mainframe attachment when host FICON/zHPF channel paths are defined to operate in FCP mode. The fibre-channel CHAs provide data transfer speeds of up to 4 Gbps and can have either 8 or 16 ports per CHA pair (pair of boards). The storage system supports shortwave (multimode) and longwave (single-mode) versions of fibre-channel ports on the same CHA. 8 Overview of mainframe operations
![](/manual_guide/products/hewlettpackard-xp20000xp24000-hp-storageworks-xp-disk-array-mainframe-host-attachment-operations-guide-a595196154-2010-dd0ef26/8.png)