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Fibre Channel FC4700 Array to IP4700 File Server Conversion Guide
3
Requirements
IP4700 Disk Rules
The following rules define IP4700 disk drive configurations:
Table 1 Supported Disks in DPE and DAEs
• You cannot mix disk sizes or spindle speeds within IP4700 system
shelves. That is, each shelf in an IP4700 or attached DAE must
consist of identical size disks. All disks within a shelf must also
run at the same spindle speed.
• The DPE must contain 10 disks (of the same size and speed). The
IP4700 DPE is bound as a RAID 5 array with eight data drives,
one parity drive and one hot spare.
• The array MUST have a Hot Spare for the largest RAID 5
protected drive in the array
– The hot spare in the DPE will stand in for any RAID group.
– The hot spare must be of equal or larger size than any other
single drive in the configuration.
– The DPE hot spare cannot be upgraded to a larger size
• Each DAE in an IP4700 system can contain:
– 5 disks, bound as 4+1 data/parity drives
– 6 disks, bound as 4+1, +1 hot spare drive
– 10 disks, bound as 2 sets of 4+1 drives
– 10 disks, bound as 1 set of 8+1+ hot spare drive
Per the first disk rule, you cannot mix 10K and 15K rpm, or
18-Gbyte, 36-Gbyte and 73-Gbyte drives in the same shelf.
Vendor Disk (P/N) Description
Seagate 005045272 18-Gbyte, 10K rpm
005045932 18-Gbyte, 10K rpm
005046730 18-Gbyte, 10K rpm
005046734 18-Gbyte, 15K rpm
005045936 36-Gbyte, 10K rpm
005046732 36-Gbyte, 10K rpm
005046734 73-Gbyte, 10K rpm