Bull Escala EPC400 Connecting Manual page 149

2. DAS 5300 model with a RAID subsystem, including:
• Either a single–SP DPE or a dual–SP including a DAE disk drawer
• One or two chained DAE disk drawers inside an EPC1200/A/2400/400/430 I/O rack, or in
a rack containing an EPC440 drawer)
• One power supply per SP and as many additional power supplies as chained DAE
drawers
3. DAS 5720 model with a RAID subsystem, including:
• Two 10-slot disk drawers (1 dual-SP + 1 DAE)
• Dual power supplies
• One battery backup
There is one Standby Power Supply (SPS) for a dual-SP DPE. For higher availability
purposes, a second Standby Power Supply, can be used on the second Storage Processor
in order to enable write caching even if a SPS is faulty or not fully charged.
Furthermore, a redundant AC power can be supplied: a dual-AC source allows to plug the
DAS 57xx to two separate AC sources.
A CBLG194-1400 (right angle) power cord is used to connect the power supply of the DPE
(without SPS) and to connect the power supply of every DAE to the PDU inside the rack.
A CBLG195-1400 (straight) power cord is used to connect a SPS to the PDU.
A SPS is rack-mounted. A rack kit is available for each SPS.
The following tables give the minimum number of disk drives per disk drawer type.
Nb of Disk Drives Minimum in DPE
Single-SP DPE
Dual-SP DPE
Figure 94.DAS5700 – Table of Minimums of Disk Drives per Drawer Type
Nb of Disk Drives Minimum in DPE
Single-SP DPE
Dual-SP DPE
Figure 95.DAS5300 – Table of Minimums of Disk Drives per Drawer Type
A DPE as well as a DAE drawer have the capacity of supporting 10 disk drives.
External Fibre Channel Disk (DAE)
One or two DAE Fibre Channel disk subsystems can optionally be ordered as external
rack-mounted devices to EPC400/430/440, EPC1200, EPC1200A and EPC2400.
Each DAE contains up to 10 disk drives.
Disk Drive Capacity 1 LCC
8.8 GB 10 000rpm
17.8 GB 10 000rpm
Figure 96.DAS Fibre Channel – Table of Number of Disk Drives per External Fibre Channel Disk
The following are automatically supplied with a DAE:
• CBLG194-0000 – Power Cord
• DRWG010-0000 – DAE 5000 Rack 10 slots (1 LCC)
5
10
3
5
2
2
Subsystem (DAE)
Min. in a Chained DAE
2
4
Min. in a Chained DAE
2
4
2 LCC
4
4
Disk Subsystems Cabling Requirements
Maximum
10
10
10-39