DS4000 models

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DS4000 models

1 Current 4 Gbps System storage servers

1.1 IBM System storage server DS4200 Express(entry-level)

n         The DS4200 is designed to replace the DS4100 Storage server.
n         The DS4200 has a total of four 4 Gbps FC host ports and 2 GB of cache memory.
n         It can hold a maximum of 16 disk drives inside thestorage server enclosure and can attach up to six EXP420 Expansion Units for a totalof up to 112 SATA disk drives.
n         It is designed to deliver data throughput of up to 1600 MBps.
n         DS4200 Express 4 Gbps technology is that it is backward compatible with 2 Gbps and even 1 Gbps technologies.
n         storage server model 7V 1814-7VA

1.2 IBM System storage server DS4700 Express(entry-level to mid-level)

n         The DS4700 storage server is designed to replace the DS4300 storage server.
n         It can hold a maximum of 16 disk drivesinside the storage server enclosure and can attach up to six EXP810 Expansion Unitsfor a total of up to 112 Fibre Channel or SATA disk drives.
n         The DS4700 comes in two models, Model 72(1814-72A) and Model 70(1814-70A).
n         The Model 72 has a total of eight 4 Gbps FC host ports and 4 GB of cache memory
n         The Model 70 has a total of four 4 Gbps FC host ports and 2 GB of cache memory.

1.3 IBM System Storage DS4800 storage server

n         The DS4800 is designed as a replacement of the DS4500 storage server.
n         The DS4800 takes advantage of 4 Gbps Fibre Channel interface technology and can support up to 224 disk drives by attaching IBM System Storage EXP810, EXP710, or EXP100 disk units.
n         Four models are available: the new Model 80(1815-80A) with 4 GB of cache, the 82A(1815-82A) with 4 GB of cache, the 84A(1815-84A) with 8 GB of cache, and the Model88A (1815-88A)with 16GB of cache.
n         The DS4800 base controller unit is broken down into five primary Field Replacement Units (FRUs).

2 Former 2 Gbps TotalStorage® Servers

2.1 IBM TotalStorage DS4100 storage server(entry-level)

n         formerly known as the FAStT100
n         SATA storage system
2.2 IBM TotalStorage DS4300 storage server(mid-level)

n         formerly known as the FAStT600
n         highly scalable 2 Gbps Fibre Channel storage server, which is available in a single and dual controller configuration


2.3 IBM TotalStorage DS4500 storage server

n         formerly known as FAStT900

3 The 4 Gbps expansion enclosures

3.1 DS4000 EXP420

n         DS4000 EXP420 expansion enclosure supports up to 16 SATA disk drives in a switched configuration (SBOD).
n         Fully populated with 500 GB SATA disk drive modules, this enclosure offers up to 8 TB of raw storage capacity.
n         The DS4200 and EXP420 can only use the 500 GB SATA EV-DDM drives
n         The EXP420 is the only expansion unit supported by the DS4200.


3.2 DS4000 EXP810

n         The DS4000 EXP810 expansion enclosure offers a 4 Gbps FC interface,
n         This is a 4-Gbps Fibre Channel interface technology that can attach to the DS4300, DS4500, DS4700, and DS4800  It supports up to 16 FC disk drives or E-DDM SATA drives (note that, at the time of writing, you cannot intermix FC and SATA drives within the same enclosure)
n         Fully populated with 300 GB FC disk drive modules, this enclosure offers up to 4.8 TB of raw storage capacity or up to 8 TB when populated with the 500 GB E-DDM (Enhanced Value Disk Drive Modules )SATA drives.

4 Withdrawn 2 Gbps expansion enclosures

4.1 DS4000 EXP100
n         The DS4000 EXP100 expansion enclosure supports up to 14 SATA disk drives.
n         Fully populated with 400 GB SATA disk drive modules, this enclosure offers up to 5.6 TB of raw storage capacity.

4.2 DS4000 EXP710
n         The new DS4000 EXP710 expansion enclosure supports up to 14 FC disk drives in a switched configuration (SBOD).
n         Fully populated with 300 GB FC drive modules, this enclosure offers up to 4.2 TB of storage capacity.

DS4700 70A/72A product comparison
Host interfaces                           4 Gbps/4 Gbps
Max cache memory                    1 GB per controller/2 GB per controller
IOPS from cache read                120000/120000
IOPS from disk read                    44000/44000
Throughput from disk                   990MBps/990MBps

DS4800 82A/ 88 Aproduct comparison

Host interfaces                           4 Gbps/4 Gbps
Max cache memory                    2 GB/cont/ 8 GB/cont
IOPS from cache read                575000/ 575000
IOPS from disk read                    86000/ 86000
Throughput from disk                   1600 MBps/ 1600 MBps












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