IBM System Storage DS4000, Hardware Manual

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Chapter 3. IBM System Storage DS4000 and DS5000 hardware
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Disk drives
򐂰 Up to 112 TB physical storage capacity.
򐂰 Accommodates up to 16 disk drives installed within the DS5020 enclosure.
򐂰 Attachment support for up to six EXP520 expansion enclosures.
򐂰 Attachment support for EXP810 with the
Attach EXP810 to DS5020 Activation feature
.
򐂰 Supports an intermix of SATA drives, FC drives, and encryption-capable FC drives (FDE)
within the DS5020 and EXP520 enclosures.
Host attachment
򐂰 Provides SAN-attached 8 Gbps Fibre Channel (FC) host connectivity, as well as optional
1GbE iSCSI host connectivity.
All DS5020s have four 8 Gbps FC ports (two per controller).
Additionally you may order initially either:
– 2-Dual 8 Gbps Host Interface Cards (HIC)
– 2-Dual 1 Gbps ISCSI HIC
System cache
򐂰 DS5020 comes with 2 GB cache memory (1 GB per internal RAID controller).
򐂰
The 4 GB cache memory (2 GB per RAID controller) feature is available as an initial plant
order feature.
򐂰 There are no cache memory upgrades available as field (MES) features for the DS5020.
Drive options
򐂰 FC disks without encryption:
– 146.8 GB/15K 4 Gbps FC DDM
– 300 GB/15K 4 Gbps FC DDM
– 450 GB/15K 4 Gbps FC DDM
– 600 GB/15K 4 Gbps FC DDM
򐂰 FC disk
with encryption
:
– 146.8 GB/15K 4 Gbps FC encryption-capable DDM
– 300 GB/15K 4 Gbps FC encryption-capable DDM
– 450 GB/15K 4 Gbps FC DDM encryption-capable DDM
– 600 GB/15k 4 Gbps FC DDM encryption-capable DDM
򐂰 SATA disks:
– 750 GB/7.2K SATA DDM
– 1000 GB/7.2K SATA DDM
򐂰
The DS5020 supports RAID 0, 1, 3, 5, 6, and 10.