Compaq EK-SMCPO-UG. C01 manual Controller Specifications

RAID Array Controller 2-5

■Stripesets (RAID 0) combine disk drives in serial to increase transfer or requests rates

■Mirrorsets (RAID 1) combine disk drives in parallel to provide a highly reliable storage unit

■RAID 4 provides striping with a fixed parity drive

■RAIDsets (RAID 5) combine disk drives in serial— just like stripesets

— but also store parity data to ensure high reliability

■Stripe mirrorsets (RAID 0 + 1) combine mirrorsets in serial to provide the highest throughput and availability of any storage unit

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

Table 2-1

Controller Specifications

Item

Environmental monitoring

Processor

System bus interface

Configuration

RAID levels supported

Drive channels supported

Number of logical drives (LUN’s)

SCSI channels

Metadata

Largest allowable disk/RAID set/LUN

Non-RAID device support

Drives supported

Drive reconstruct

Disk hot plug

Disk hot spare (spinning)

Specifications

High availability fault bus support via EMU

40 MHz, 32 bit LR33310 RISC CPU

Two, Wide, differential UltraSCSI channels

Two RS232 serial ports

0, 1, 0+1, 4, 5

Two, Wide, UltraSCSI single-ended channels

Up to 30 RAID sets, and up to 16 redundancy groups (LUNs) per RAID set

Two, UltraSCSI, 16-bit, single-ended

20 blocks/disk (10240 bytes)

Two, 32 blocks (approximately 2.2 petabytes)

Disk drives (JBOD)

StorageWorks 2, 4, 18, and 36 GB SCSI and UltraSCSI drives.

Automatic with hot or warm spares

Yes

Yes, global hot spare

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