HP StorageWorks 4000/6000/8000 - Enterprise Virtual Arrays - XP Continuous Access; Network Requirements for Long-Distance IP Gateways and M-Series Switches with VCS; XP Continuous Access Replication Modes

Table 164 describes the network bandwidth requirements and IP gateway support for VCS 4.x with M-series
switches.
Table 164 Network requirements for long-distance IP gateways and M-series switches with VCS 4.x
Minimum IP bandwidth
1,
nl
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 group
Recommended: At least 5 Mb/s for 1
to 5 DR groups
At least 2 Mb/s for 1 DR group
Recommended: At least 5 Mb/s for 1 to 5 DR groups
EOSi 4.6McDATA Eclipse
1620 SAN Router,
Eclipse 2640 SAN
Router
1
Continuous Access EVA requires a minimum of 2 Mb/s of IP bandwidth per path, or 4 Mb/s for two paths.
2
See Table 131 for the maximum number of DR groups supported based on maximum IP bandwidth.
XP Continuous Access
XP Continuous Access is supported on all XP storage systems. It supports three data replication modes:
Synchronous, Asynchronous, and Journal. Table 165 describes the XP storage systems, replication
modes, and required firmware versions.
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
Table 165 XP Continuous Access replication modes
1
Minimum
nl
firmware versions
Recommended
firmware versionsJournal
3
Asynchronous
2
SynchronousXP storage system
60.01.68.00/0060.06.05.00/00•••
XP24000
XP20000
50.05.46.00/00
4
50.09.86.00/00
4
•••
XP12000
XP10000
21.13.02.00/00
5
21.14.50.00/00
5
—••
XP1024
XP128
01.19.86.00/0001.19.99.00/02—••
XP512
XP48
1
Legend: • = supported; — = not supported
2
XP24000/20000/12000/10000: 32K pairs.
3
XP24000 with RAID Manager 1.20.05 (or later), XP12000/10000 with RAID Manager 1.17.04 (or later).
4
Replication between XP24000/20000 and XP12000/10000 requires firmware 50.09.37.00/02 (or later).
5
Replication between XP24000/20000 and XP1024/128 requires firmware 21.14.37.00/00 (or later).
SAN Design Reference Guide 335