IBM SCOD-3ZVQ5W Configuration And Options Manual page 444

Figure 95. FAStT900 storage server
TotalStorage DS4500 hard disk drive (HDD) storage
Option Number
171010U DS4000 EXP100 Storage Expansion Unit
1740710 DS4000 EXP710 Storage Expansion Unit
Notes:
1. External options may require software upgrades, licenses, etc. Refer to the "Other Options" table for
possible related options.
436
COG
Description
External Storage Expansion Units
1