Table of Contents
Advertisement
1. Make a fibre-channel connection from the DS4800 Storage Subsystem to port
2. Make a fibre-channel connection from port 1A of the first storage expansion
3. Make a fibre-channel connection from port 1A of the second storage expansion
4. Make a fibre-channel connection from port 1A of the third storage expansion
To create drive loop B (of the DS4800 redundant drive loop) shown in Figure 34 on
page 55, you would perform the following steps:
1. Make a fibre-channel connection from the DS4800 Storage Subsystem to port
2. Make a fibre-channel connection from port 1A of the last storage expansion
3. Make a fibre-channel connection from port 1A of the third storage expansion
4. Make a fibre-channel connection from port 1A of the second storage expansion
Intermixing the EXP810, EXP710, and EXP100 in the same drive loop
Intermixing storage expansion enclosures is limited by the level of controller
firmware that is installed on your DS4000 Storage Servers. Table 25 shows the
firmware level you will need for intermixing the different storage servers and
expansion enclosures.
A FC/SATA premium feature will be required if EXP810s with fibre channel E-DDMs
are intermixed with EXP100s.
There are maximum limits to the number of fibre channel hard drives that you can
configure in redundant drive channel pairs. The maximum number of drives dictates
a fixed number of supported 14-drive storage expansion enclosures (EXP100s and
EXP710s) and 16-drive storage expansion enclosures (EXP810s) combinations.
IBM does not support partially filled storage expansion enclosures in a given
redundant drive loop/channel pair.
Table 26 on page 57 lists the numbers of 14-drive storage expansion enclosures
(EXP100s and/or EXP710s) and 16-drive storage expansion enclosures (EXP810s)
that you can combine for use in a single redundant drive channel/loop pair in a
DS4000 storage subsystem with no internal drive slots as in a DS4800 or DS4500
56
IBM System Storage DS4000 EXP810 Storage Expansion Enclosure: Installation, User's and Maintenance Guide
1B of the first storage expansion enclosure (connection �1�).
enclosure to port 1B of the second storage expansion enclosure (connection
�2�).
enclosure to port 1B of the third storage expansion enclosure (connection �3�).
enclosure to port 1B of the fourth storage expansion enclosure (connection �4�).
1B of the last storage expansion enclosure (connection �5�).
enclosure to port 1B of the third storage expansion enclosure (connection �6�).
enclosure to port 1B of the second storage expansion enclosure (connection
�7�).
enclosure to port 1B of the first storage expansion enclosure (connection �8�).
Table 25. Firmware levels for intermixing storage servers and expansion enclosures
Firmware
06.16.xx.xx or higher
06.16.8x.xx or higher
06.19.xx.xx or higher
06.23.xx.xx or higher
07.10.xx.xx or higher
Storage Servers
DS4800
DS4800, DS4700
DS4500, DS4300
DS4800, DS4700,
DS4500, DS4300
DS4700, DS4800
Expansion Enclosures
EXP810, EXP710
EXP810, EXP710
EXP810, EXP710, EXP100
EXP810, EXP710, EXP100
EXP810, EXP710, EXP100
Advertisement
Table of Contents
