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environments. DS4700 Express Storage Subsystems that shipped before the
introduction of the DS4700 Express models with dc power supply and fan units
support standard IT and office operating environments only. You can identify
whether a DS4700 Express Storage Subsystem is NEBS/Telco compliant by
checking the serial number. Any DS4700 Express Storage Subsystem with serial
numbers starting at 138500A and higher are NEBS level 3/Telco compliant.
The DS4000 Storage Manager client is also available for the DS4700 Express. This
storage management software is designed to help centralize storage management,
help simplify partitioning of the DS4000 storage subsystem, and strategically
allocate storage capacity to maximize storage space.
Models
The following DS4700 Express RAID controller cache size, partitions, and other
features vary depending the DS4700 Express model:
v Model 70H comes with 1 GB cache per controller, two host ports per controller,
and two storage partitions premium feature, which you can upgrade. Model 70H
can also be upgraded to support Copy Services premium features such as
FlashCopy, VolumeCopy and Enhanced Remote Mirroring when you purchase
those additional Copy Services premium feature options. Model 70H also
includes the Windows Host kit as standard. Model 70H does not come with
DS4000 drive expansion enclosure attachment entitlements. You can purchase 1
to 3 drive expansion and 4 to 6 drive expansion enclosures attachment
entitlements to connect up to six enclosures. Model 70H comes with ac power
supply and fan units.
v Model 70A is the same as Model 70H except that you can select to upgrade
partitions when placing the order. You can also select a supported host kit.
v Model 70S is the same as Model 70A except that it has dc power supply and fan
units instead of ac power supply and fan units.
v Model 70T is the same as Model 70H except that it has dc power supply and fan
units instead of ac power supply and fan units.
v Model 72H comes with 2 GB cache per controller, four host ports per controller,
and eight storage partitions premium feature, which you can upgrade when you
purchase storage partitioning upgrades. Model 72H can also be upgraded to
support Copy Services premium features such as FlashCopy, VolumeCopy and
Enhanced Remote Mirroring when you purchase those additional Copy Services
premium feature options. Model 72H also includes the Windows Host kit as
standard. Model 72H comes with 1 to 3 DS4000 drive expansion enclosure
attachment entitlements. You can upgrade to 4 to 6 drive expansion enclosures
attachment entitlements.
v Model 72A is the same as Model 72H except that you can select to upgrade
partitions when placing the order. You can also select a supported host kit. Model
72A comes with ac power supply and fan units.
v Model 72S is the same as Model 72A except that it comes with dc power supply
and fan units instead of ac power supply and fan units.
v Model 72T is the same as Model 72H except that it comes with dc power supply
and fan units instead of ac power supply and fan units.
Contact your IBM sales representatives or reseller for more information on the
various DS4700 Express models and options.
2 IBM System Storage DS4700 Express Storage Subsystem: Installation, User’s and Maintenance Guide