.SAN design reference guide Vol. 1-5 785350-001

Table 153 (page 304) describes the network bandwidth requirements and IP gateway support for
VCS 4.x with C-series switches.
Table 153 Network requirements for long-distance IP gateways and C-series switches with VCS 4. x
Minimum IP bandwidth
1
and maximum DR groups
2
Minimum
supported
firmware versionGateway pair
Single or shared IP link maximum latencyDual IP link maximum latency
0 to 100 ms one-way0 to 100 ms one-way
At least 2 Mb/s for 1 DR groupAt least 2 Mb/s for 1 DR group
See note.
3
HP IP Distance
Gateway
(mpx110)
Recommended: At least 5 Mb/s for 1 to 5
DR groups
Recommended: At least 5 Mb/s for 1 to 5
DR groups
MPX200
Multifunction
Router
.
C-series IPS-8,
14/2, 18/4,
MDS 9216i,
MDS 9222i
Legacy IP gateways
At least 4 Mb/s for 1 DR groupAt least 2 Mb/s for 1 DR group
.C-series IPS-4
Recommended: At least 10 Mb/s for 1 to 5
DR groups
Recommended: At least 5 Mb/s for 1 to 5
DR groups
1
HP P6000 Continuous Access requires a minimum of 2 Mb/s of IP bandwidth per path, or 4 Mb/s for two paths.
2
Assumes single-member DR groups (1 virtual disk). For the maximum number of DR groups supported based on maximum IP
bandwidth, see Table 114 (page 228).
3
For current support, see the SPOCK website at http://www.hp.com/storage/spock. You must sign up for an HP Passport to enable
access.
HP P9000 (XP) Continuous Access
HP P9000 (XP) Continuous Access is supported on all XP storage systems. It supports three data
replication modes: Synchronous, Asynchronous, and Journal. Table 154 (page 305) describes the
XP storage systems, replication modes, and required firmware versions.
HP P9000 (XP) Continuous Access Synchronous supports two fence levels: data and never (status
fence level is not supported).
• Data—Prevents host writes in the event of a replication link failure
• Never—Allows host writes to continue after a replication link failure
304 SAN extension