User`s guide

RAID Array 3000 Pedestal Enclosure

2–4 EK–SMCPO–UG. A01

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Stripesets (RAID 0) combine disk drives in serial to increase transfer or re-

quests rates

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Mirrorsets (RAID 1) combine disk drives in parallel to provide a highly reli-

able storage unit

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RAID 4 provides striping with a fixed parity drive

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RAIDsets (RAID 5) combine disk drives in serial - just like stripesets - but

also store parity data to ensure high reliability

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Stripe mirrorsets (RAID 0 + 1) combine mirrorsets in serial to provide the

highest throughput and availability of any storage unit

Table 2–1 summarizes the features of the RAID 3000 controller.

Table 2–1 Controller Specifications

Item

Specifications

Environmental Monitoring High Availability Fault Bus support via EMU

Processor 40 MHz, 32 bit LR33310 RISC CPU

System Bus Interface Two, WIDE, Differential UltraSCSI channels

Configuration Two RS232 serial ports

RAID Levels Supported 0, 1, 0+1, 4, 5

Drive Channels Supported Two, WIDE, UltraSCSI single-ended channels

Number of Logical Drives (LUN’s) Up to 30 RAID sets, and up to 16 redundanc

groups (LUNs) per RAID set

SCSI Channels Two, UltraSCSI, 16-bit, single-ended

Metadata 20 blocks/disk (10240 bytes)

Largest Allowable Disk/RAID set/LUN Two, 32 blocks (approximately 2.2 petabytes)

Non-RAID Device Support Disk Drives (JBOD)

Drives Supported Stora

eWorks 2, 4, and 9m GB SCSI and Ul-

traSCSI drives.

Drive Reconstruct Automatic with hot or warm spares

Disk Hot Swap Yes

Disk Hot Spare (spinning) Yes, global hot spare