CRD-5500
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`RAID DISK ARRAY CONTROLLER
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`Once again, CMD has raised the standard by which all other RAID controllers will be compared!
`CMD's CRD-5500 SCSI to SCSI RAID controller is the industry's best solution for building high
`performance, high availability SCSI disk array subsystems. CMD's years of experience as an industry
`leader in high performance, advanced technology RAID controllers and SCSI host adapters for Unix,
`midrange, and PC systems has given CMD unmatched insight in designing a second-generation
`disk array controller solution that allows OEMs, VARs, and system integrators to build the best RAID
`subsystems available today.
`
`Key Benefits
`
`The CRD-5500 was designed to satisfy the most demanding requirements of today's sophisticated
`RAID user; it gives you high performance in every application, without compromising reliability or
`data integrity. The key to the CRD-SSOO's outstanding performance Is CMD-designed proprietary
`ASIC components, as well as Innovative caching and RAID algorithms. Unlike other RAID controllers,
`CMD's advanced ·viper" RAID architecture and ASICs were designed to support tomorrow's high
`speed serial interfaces, such as Fiberchannel (FCAL) and Serial Storage Architecture (SSA). In
`addition, the CRD-5500's modular design allows the user to quickly and easily configure an optimal
`RAID subsystem simply by installing individual Fast, Fast/Wide, or Fast/Wide/Differential SCSI
`interface modules and up to 512 MB of data cache using industry standard SIMMs.
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`Advanced Features
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`• Over 6,450 IOPS and 17 MB/Sec. per SCSI Host Channel
`• 40 MHz, 32-bit LR33310 RISC CPU (MIPS R3000 core)
`• Proprietary CMD RAID ASICs for advanced features and highest performance
`• Up to 512 MB of Data Cache using industry-standard, 72-pin SIMMs
`• RAID levels O, 1, O+l, 4, 5, and JBOD
`• Modular, scalable design
`• Up to eight Fast or Fast/Wide SCSI disk channels
`• Up to four Fast/Wide or Fast/Wide/Differential SCSI host channels
`• Dual redundant controller option
`• Standard 5~ inch, full-height form factor
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`CPU llOASIC
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`XOR ASIC
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` CROSSROADS EXHIBIT 2011
`Cisco Systems et al v Crossroads Systems, Inc.
` IPR2014-01544
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`RISC CPU
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`ModulM
`SCSJ Ch~mnels
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`DRAM Conttolfer ASIC
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`Scalable Performance, Features & Configuration
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`CMD designed the CRD-5500 with the OEM, VAR, and Reseller in mind. The CRD-SSOO's scalable
`architecture was designed to allow you to configure a RAID storage solution for every application,
`from entry-level imaging workstations to fully fault-tolerant, high-capacity OL TP and
`Video-on-Demand servers. Unlike other RAID controllers, CM D's unique and modular design uses
`individual SCSI interface modules that allow the user to increase performance and expand
`subsystem capabilities by simply adding modules. The controller has nine module slots. Up to four
`slots may contain modules configured as host channels. Slots not.configured as host channels may
`be used as drive channels. CMD offers the following SCSI modules for use in the CRD-5500:
`
`j CRD-5530 Fast, Single-Ended (disk channels only)
`I CRD·S540 Fast/Wide, Single-Ended (disk or host channels)
`I CRD-5560 Fast/Wide, Differential (disk or host channels)
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`Only CMD allows you to easily add new interfaces or more powerful modules as they become
`available, protecting your valuable storage investment.
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`Unmatched Performance & Reliability
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`CMD's CRD-5500 provides unequaled performance! To meet the performance requirements of
`tomorrow's high-speed serial interfaces, CMD designed the CRD-5500 to use the MIPS R3000 family
`of 32·bit RISC processors and proprietary CMD custom ASIC logic components. Four separate
`ASICs for RAID (Exclusive OR), DRAM management (fast page mode DRAM control), CPU-1/0 (CPU
`support logic), and DMA {high-speed data path management) functions, together with an internal 80
`MB/sec. 36-bit (32 data and four parity) data bus provides the CRD-5500 with up to 6500 I/Os per
`SCSI host channel.
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`Users can install up to four industry-standard 72-pin SIMMs to provide a total of up to 512 MB of
`(user-selectable) Write-Back or Write-Through cache. To provide guaranteed data integrity, the
`CRD-5500 includes a built-in battery charger and monitoring circuit that supports an external 6.6
`VDC sealed, lead-acid type battery (not included) for cache power backup. For use with external
`UPS systems, an optional "2-minute warning" input is also provided. In either case, the CRD-SSOO's
`intelligent power management circuitry assures cached data integrity during extended power
`blackouts or enclosure power supply failure.
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`Unlimited Configuration Flexibility
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`The CRD-5500 allows almost unlimited configuration flexibility! Each CRD~SSOO supports up to 32
`logical devices {RAID sets or JBOD disks) as separate SCSI logical unit numbers (LUNs). Logical
`devices can be mapped to Individual host channels as shared or non-shared, with a LUN number
`unique to a specific host bus. RAID sets can be configured in any orientation and can consist of one
`to 56 drives, depending on RAIO level and other options selected. Partitioning is supported on a
`per-LUN basis {up to 16 per RAID set), as well as Write-Through or Write-Back caching. Global
`(floating) spare disks and standalone UBOD) disk drives are also supponed. In addition. the
`CRD-SSOO's Dynamic Reconfiguration capability allows Individual disk drives and RAID sets to be
`removed and re-installed in any location. High performance, fault tolerant RAID subsystems can be
`configured using two CRD-5500s In a redundant configuration (depending on host platform and
`operating system capabilities).
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`Choose a RAID Level To Optimize Performance and Data Availability
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`The CRD-5500 gives you the option of seleding the RAID level that best suits your application's
`unique requirements. Each RAID set can be formatted as RAID o (for high throughput without data
`protection), RAID 1 (disk mirroring for small capacity applications), RAID O+l (mirrored RAID 0
`arrays), RAID 4 (for large file size, high throughput applications), or RAID 5 (for small file
`applications, such as OLTP or database servers). Regardless of the RAID level you choose. the
`CRD-SSOO's exclusive RPM (RAID Performance Monitor) algorithms provide information on cache hit
`rates, stripe size, and I/Os per second that allow you to fine-tune your RAID subsystem for maximum
`performance.
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`Other CRD-5500 Key Features Include
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`• Global spare disk.and dynamic rebuild. Multiple disks can be configured as hot or warm
`spares.
`• Suppons mixed disk drive vendors and capacities, even within the same RAID set!
`• Front panel LCD display, 1/0 channel LEDs. and audible alarm for reponing critical failures.
`• Comprehensive statistics and debug utility (via terminal) for optimizing subsystem
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`performance.
`• Dual controller option for building true fault tolerant subsystem configurations.
`• RS-232 serial terminal interface for configuration and monitoring.
`• Remote Terminal Services (RTS) Asynchronous Event Notification interface option.
`• Separate termination power input for SCSI disk drives.
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`Specifications
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`I General
`I System Architecture
`I Host Bus Interface
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`Disk Bus Interface
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`I Command Queuing.
`I cache
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`Operating Systems Supported
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`LR33310 32-bit RISC CPU. Internal 80 MB/sec., 36-bit DMA
`data path and XOR using CMD's custom ASIC RAID chipset.
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`Up to four, 20 MB/sec. Fast/Wide/Single-Ended or 20 MB/sec.
`Fast/Wide/Differential SCSI.
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`Up to eight, 10 MB/sec. Fast/Single-Ended,
`20 MB/sec. Fast/Wide/Single-Ended or
`20 MB/sec. Fast/Wide/Differential SCSI (up to 56 SCSI disk
`drives per CRD-5500.
`164 commands (host and disk SCSI channels)
`Up to 512 MB (up to four, industry-standard 72-pin, 60
`nanosecond SIMMs)
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`Any operating system that supports standard SCSI with block
`size from 256 to 520 bytes (in eight-byte increments) and
`SCSI LUNs
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`I Environmental
`I Temperature
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`I s0 c to S0°C operating, -40°C to +60" non-operating
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`Relati'l/e Humidity
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`10% to 85% non-condensing (operating), 5% to 90% non-condensing
`(non~operating)
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`I Physical
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`Controller Size
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`8.1 inches deep, 5.57 inches wide, 3.25 inches high (full-height 514 inch form
`factor) 8 pounds maximum weight
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`Power Required
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`I Reliability
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`jwarranty
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`5 VDC @ 6 amps peak, not Including disk termination power requirements. 12
`VDC @ 1.2 amps peak, includes battery charger current requirements.
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`I MTBP/MTIR: 450,000 POH, 20 minutes MTIR
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`Three years return to factory. Custom warranty programs available.
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`Sptclllations subject to chang~ wilhoLM notict.
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`Ordering Information
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`The CRD-5500 may be ordered in many configurations, depending on the number and type of SCSI
`modules required. SIMM cache modules are not available from CMD but may be purchased
`off-the-shelf from any major computer parts distributor. Basic CRD-5500 models and standard
`options are as follows:
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`I CRD-5500-0151 CRD-5500 with one Fast/Wide host and five Fast SCSI disk channels
`j CRD-5500-105 1 CRD-5500 with one Fast/Wide/Differential host and five fast SCSI disk channels
`I CRD-5530
`I Additional Fast/Single-Ended SCSI channel module
`l CRD-5540
`I Additional Fast/Wide/Single-Ended SCSI channel module
`I CRD-5560
`I Additional Fast/Wide/Differential SCSI channel module
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`[Storage Division] [Semi-Conductor Djyjsio.n) [Technical Support] (About CMD]
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`
`Revised: Wednesday, December 4, 1996
`~ CMD Technology, Inc.
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