Chapter 3. IBM System Storage DS4000 and DS5000 hardware 95
Figure 3-71 compares the DS5100 and DS5300 with their predecessor, the DS4800, and
points out the main differences.
Figure 3-71 Key improvements of the DS5000 over the DS4800
A vendor neutral company called Storage Performance Council has done a performance test
on the DS5300, which we refer to for performance details. The results of this test can be
found at the following address:
http://www.storageperformance.org/results
3.7 DS5000 series physical specifications
This section contains the physical specifications for the DS5020, DS5100, and DS5300
systems and the expansion units.
IBM System Storage DS5020 storage subsystem (1814-20A)
Height: 129.5 mm (5.1 in.)
Width: 482.6 mm (19.0 in.)
Depth: 571.5 mm (22.5 in.)
Weight
– Drive-ready (without drive modules installed): 27.67 kg (61 lbs.)
– Fully configured (16 drive modules installed): 39.92 kg (88 lbs.)
3.2 Gbps
1 Gbps
on single PCI-X buss
Across backend drive loops
Battery backed
4, 8 or 16 GB
224
Eight 4 Gbps FC
DS4800
4 Gbps
on dual PCI-Express busses
Internal
bandwidth
(single
controller)
17 Gbps
Cache
bandwidth
(ASIC to Cache)
Dedicated PCI-Express bussesCache mirroring
Battery-backed
and destagedto disk (permanent)
Cache
protection
8 to 64 GBData cache
448Max drives
Eight or Sixteen
4 Gbps FC, 8 Gbps FC, 1 Gbps
iSCSI
Host interfaces
DS5000
3.2 Gbps
1 Gbps
on single PCI-X buss
Across backend drive loops
Battery backed
4, 8 or 16 GB
224
Eight 4 Gbps FC
DS4800
4 Gbps
on dual PCI-Express busses
Internal
bandwidth
(single
controller)
17 Gbps
Cache
bandwidth
(ASIC to Cache)
Dedicated PCI-Express bussesCache mirroring
Battery-backed
and destagedto disk (permanent)
Cache
protection
8 to 64 GBData cache
448Max drives
Eight or Sixteen
4 Gbps FC, 8 Gbps FC, 1 Gbps
iSCSI
Host interfaces
DS5000
200%
400%
400%
>500%
200%
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