xSeries Only SAN Solutions pSeries Only Direct Attach Solutions SATA SAN Solutions pSeries Only Direct Attach Solutions
DS300 DS400 EXP Plus 320 DS4100 7204
Product DS300 DS400 EXP Plus 320 DS4100 (formerly FAStT100 Storage Server) External Disk Drive
Machine/model 1701-1RL,1701-1RS,1701-2RD 1700-1RS, 1700-2RD 2104/DS4,TS4 1724-100/1SC 7204-573, 7204-646
Platform sup-
port
1
Windows 2000,Windows 2003,RedHat 3,RedHat 4,
SuSE 8,SuSE 9,SteeleEye
Windows 2000,Windows 2003,RedHat 3,RedHat 4,
SuSE 8,SuSE 9,SteeleEye
pSeries,select RS/6000 servers,AIX Windows Server™ 2003,Windows 2000 Server
w/SP4 & Adv.Server,Novell NetWare 6.0 w/SP4,
NetWare 6.5 w/SP2,Red Hat Enterprise Linux 3.0,
4.0,SUSE LINUX Enterprise Server 8, 9,VMware ESX
2.5.1,AIX 5.1/5.2,5.3,HP UX 11/11i,Solaris 7/8/9
pSeries,select RS/6000 servers,AIX
7204 646 – also supports LINUX® version SLES 9
Host connectiv-
ity
iSCSI Fibre Channel Ultra 320 SCSI Fibre Channel Ultra SCSI - LVD
SAN support Switched Ethernet Direct,Switched Fabric N/A Direct,FC-AL,Switched Fabric N/A
Copy services FlashCopy FlashCopy N/A FlashCopy option, Enhanced Remote Mirroring N/A
Availability
features
Fault Tolerant,RAID,Redundant Hotswap Power,
Hotswap drives, Dual controller, dual pathing drivers
Fault Tolerant,RAID,Redundant Hotswap Power,
Hotswap drives, Dual controller, dual pathing drivers
RAID with server adapters, redundant power/cooling,
hot-swap drives, enclosure services
Fault-tolerant,RAID,redundant power/cooling,hot-
swap drives, dual controllers,concurrent microcode
update capability,dual-pathing driver
Controller Dual active 1GB iSCSI RAID Controllers Dual Active 2GB FC RAID Controllers Adapters in server Single/dual 2GB RAID controller
Cache (min, max) 256MB Battery Back-up 256MB Battery Back-up N/A 256MB, 512MB N/A
RAID support 0,1, 5, 10, 50 0, 1, 5,10,50 0,1,5 (using server-based adapters) 0, 1, 3, 5,10 N/A
Capacity (min,
max)
36GB,4.2TB 36GB, 12TB with 2 EXP400 Expansion Units 32GB, 2TB 250GB,Dual controller supports 28TB with seven
Expansion Units
Single controller supports 3.5TB
7204-573; 73GB
7204-646; 146GB
Drive interface Ultra320 SCSI Ultra320 SCSI Ultra 320 SCSI 2Gb FC-AL Ultra SCSI
Drive support 73GB,146GB,300GB 10,000 rpm disk drives; 36GB,
73GB,146GB 15,000 rpm disk drives
73GB,146GB,300GB 10,000 rpm disk drives; 36GB,
73GB,146GB 15,000 rpm disk drives
18.2GB,36.4GB,73.4GB and 146.8GB 10,000 rpm
disk drives; 36.4GB and 73.4GB 15,000 rpm disk
drives
250GB 7,200 rpm SATA disk drives Single Drive
7204-573; 73GB
7204-646; 146GB
Clustering
Support
Microsoft Windows MSCS Microsoft Windows MSCS HACMP Microsoft Clustering Services,IBM SAN Volume
Controller 2.1.0
N/A
10
Disk Storage Systems
Entry-level Disk Systems
