This appendix contains highlights of hardware storage components available on the RS/6000.
This section looks at the hardware adapters available to connect various hardware storage components to the RS/6000 system units.
The following are examples of SCSI adapters that are available to connect SCSI devices to the RS/6000.
This Micro Channel adapter occupies one slot in the RS/6000 and provides:
This adapter is supported in the following systems:
This Micro Channel adapter occupies one slot in the RS/6000 and provides:
This adapter is supported in the following systems:
This adapter is supported in the following systems:
This Micro Channel adapter occupies one slot in the RS/6000 and provides:
This adapter is supported in the following systems:
This Micro Channel adapter occupies one slot in the RS/6000 and provides:
This adapter is supported in the following systems:
This integrated controller provides the following capabilities:
The controller is integrated into the following models:
This integrated controller provides:
The controller is integrated into the following models:
This integrated controller provides:
This adapter provides the following capabilities:
This adapter is integrated into the following models:
The following are examples of serial adapters that can be used to attach serial devices to the RS/6000.
This Micro Channel adapter occupies one slot on the RS/6000 and provides:
The adapter is supported in the following systems:
The following adapter can be used to attache HiPPI compatible devices to the RS/6000.
This Micro Channel adapter occupies 3 adjacent slots in the RS/6000, though due to power constraints, must be considered to occupy 5 slots. It provides:
The adapter is supported in the following systems:
The following adapter can be used to attach ESCON* compatible devices to the RS/6000.
This Micro Channel adapter requires 2 slots on the RS/6000 and provides:
This adapter is supported by the following systems:
The following adapter can be used to attach channel compatible devices to the RS/6000.
This Micro Channel adapter requires one slot in an RS/6000 and provides:
The adapter is supported in the following systems:
This section looks at the disk storage products that are available for attachment to the RS/6000.
The following drive units can be installed.
The following drives are available. They are SCSI-2 single-ended unless otherwise specified.
The following drives are available:
The following drives are available:
The following disk subsystems can be attached to the RS/6000.
The 7203 provides an external disk drive supporting a removable disk pack of either 355MB or 1.0GB. This is useful for environments where security is an issue, as the disk pack can be removed and stored in a secure place. Disk packs can also be moved between machines, allowing easy sharing of information. The 7203 supports a standard SCSI interface, and is attachable to all systems.
The 7204 is an external disk unit supporting the following capacities:
The 9334 SCSI Expansion Unit provides support for up to four SCSI disk drives per unit. There are four models:
The 9333 High Performance Disk Drive Subsystem attaches to a port on the High Performance Disk Drive Subsystem adapter, and supports up to four serial disks. The 9333 is designed to provide the fastest response time when an application makes large numbers of requests for short blocks of data.
The 9333 also supports multiple paths from its controller to the processor, allowing a 9333 to attach simultaneously to up to eight hosts processors. This is useful for high availability environments or data sharing. Independent electrical paths are provided to each host, so bandwidth is not shared, nor will electrical failure in one path affect the others.
There are four models of the 9333:
The 7134 High Density SCSI Disk Subsystem can hold 16 3.5" 2.0GB SCSI disk drives. These drives are split into two banks of eight drives, each on a separate internal (to the 7134) SCSI adapter. The 7134 itself requires a SCSI-2 differential fast/wide adapter to attach to the system. The subsystem can be connected to two hosts for availability reasons, and in this case, only six drives are supported in each bank.
There is one model of the 7134:
The 7135 RAIDiant Array provides high data availability and/or performance using RAID technology (RAID is explained in Selecting the Correct Disk Storage Devices); RAID levels 0, 1, 3, and 5 are supported. Essentially any combination of RAID levels are concurrently supported on the 7135, with the Logical Unit, or LUN of disks supporting each defined RAID level appearing as a single SCSI disk drive to the operating system.
The 7135 is connected to the host system via either a SCSI-2 differential adapter, or a SCSI-2 fast/wide differential adapter. The disks are connected internally to five SCSI-2 buses, giving a maximum number of 30 disks; either 2.0GB, or 1.3GB 3.5" disks are supported.
The 7135 has an internal controller that manages the RAID functions, and a second controller may be added operating in either standby mode (taking over in the event of failure of the first), or in active mode (providing enhanced performance as well as availability). In addition, redundant power supplies and cooling are standard, and maintenance is supported concurrently on any failing hardware.
There are two models of the 7135:
The 3514 Disk Array provides a lower cost solution for those environments not requiring the full range of RAID support. The 3514 allows a maximum of eight disk drives, which can be either 1.0GB or 2.0GB (not mixed within the same unit). RAID levels 0 and 5 are supported, configurable from the front panel of the unit. All drives within the 3514 are used in the configured RAID level, and appear to the operating system as a single SCSI disk drive (one drive can be designated at a hot spare, to be used automatically in the event of failure of one of the other drives).
The 3514 is connected to the host system via a SCSI-2 fast/wide differential adapter, or a SCSI-2 differential adapter; internally, the disks are connected to the array controller via four SCSI-2 buses.
A redundant power supply is provided, but not cooling fans, or controller.
There are four models of the 3514:
The 9570 Disk Array is designed to support applications requiring very high performance access to information, and/or enhanced availability. The 9570 R5 supports RAID levels 1 and 5 concurrently within a system in separately defined partitions. The internal disks are 2.0GB SCSI disks supporting IPI-2 protocols, and are supported in configurations ranging from 12.9GB to 232.4GB of data.
The 9570 is connected to the host system via the HiPPI adapter, and can support a maximum sustained data transfer rate of over 60MB/sec.
Fault tolerance is provided in the form of redundant power supplies and cooling. The subsystem also provides its own console for error detection, collection and monitoring. Automatic log analysis and real time fault isolation can be performed.
The 9570 is rack based and there are many models depending upon the exact configuration required. The first rack in a subsystem will always contain the array controller, one or two HiPPI ports, and up to 10 drawers of disks (each drawer can have up to four disks). Three additional racks may be daisy chained to the first rack, also containing a maximum of 10 drawers. The model numbers are constructed as follows. The first digit may be a 0, 1 or 2; 0 indicates an expansion rack, 1 or 2 indicates a controller rack, the number determining how many HiPPI ports the rack contains. The last two digits will be either 20 (five drawers in the rack), or 40 (10 drawers in the rack). So, for example, a model 140 would be a controller rack with one HiPPI port and 10 drawers of disk.
The following section looks at the tape storage products that are available for attachment to the RS/6000.
The following tape devices are available.
The 7206 is a standalone 4mm helical scan technology tape device (helical scan is explained in Tape Storage). The 7206 attaches to the system via a SCSI, or SCSI-2 interface, depending upon the model. A media recognition feature is included that ensures that only data grade tape cartridges can be used. The 7206 support data compression, attach to all model of the RS/6000, and can be mounted inside the 500 and 900 series.
There are two models:
The model 001 offers 2.0GB native cartridge capacity (up to 4GB when using compression). The data transfer rate is 183 KB/sec (up to 366 KB/sec when using compression). This model attaches via a SCSI adapter.
The model 005 offers 4.0GB native cartridge capacity (up to 8GB when using compression). The data transfer rate is 400 KB/sec (up to 800 KB/sec when using compression). This model attaches via a SCSI-2 adapter.
The 7207 is a standalone 0.25" longitudinal technology tape device (longitudinal technology is explained in Tape Storage). All models attach to the system via a SCSI adapter, and none support compression. The 7207 attaches to all models of the RS/6000 and can be mounted inside.
There are three models:
The model 001 provides a maximum data transfer rate of 90KB/sec, and a maximum storage capacity of 150MB.
The model 011 provides a maximum data transfer rate of 200KB/sec, and a maximum storage capacity of 525MB.
The model 012 provides a maximum data transfer rate of 300KB/sec, and a maximum storage capacity of 1.2GB.
The 7208 is a standalone 8mm helical scan tape device (helical scan technology is explained in Tape Storage). The 7208 attaches to the system via a single-ended SCSI-2 adapter. Data compression is provided using the IBM IDRC (Improved Data Recording Capability) algorithm.
There is one model currently available for attachment to the RS/6000. The model 011 supports a sustained data transfer rate of 500KB/sec, and cartridge capacity of 5.0GB. With compression, data rates and capacities of up to 1MB/sec and 10GB respectively are achievable. The model 011 is supported on all models and may be mounted internally in the 500 and 900 series.
The 9348 is a standalone 0.5" reel, longitudinal technology tape device (longitudinal technology is discussed in Tape Storage). Tape recording densities of 1600 and 6250 bits per inch are supported with a data rate of 200KB/sec at 1600bpi, and a maximum data rate of 781 KB/sec at 6250bpi. The unit autoloads and autothreads tape reels, and attaches via a single-ended SCSI interface to the system unit. Reel data capacities are 40MB at 1600bpi, and 160MB at 6250bpi. There is only one model attachable to the RS/6000, the model 012, though the unit can be mounted in a rack.
The 3490 includes a family of 0.5" longitudinal technology tape devices (longitudinal technology is explained in Tape Storage). There are two basic components, the tape string controller and the tape devices themselves. The tape devices can be either 18 track or 36 track, and contain either two or four physical drives, each with a cartridge loader. The control units attach via SCSI-2 differential fast/wide, S/370* channel, or ESCON, depending upon the model. All models use the Improved Data Recording Capability (IDRC) algorithm to provide data compression.
As has been mentioned, there are various models, summarized below:
The A01 supports 1 x 18 track tape device (B02 or B04). The A02 supports 2 x 18 track tape devices (B02 or B04).
The A10 supports 1 x 36 track tape device (B20 or B40). The A20 supports 2 x 36 track tape devices (B20 or B40).
All of these controllers attach to the host via ESCON or System/370 channel.
The B02 and B04 are both 18 track tape devices. Both support a data rate of 3MB/sec and a tape capacity of 200MB. The B02 has two physical drives, whil the B04 has four. All drives have cartridge loaders containing up to six cartridges.
The B20 and B40 are both 36 track tape devices. Both support a data rate of 3MB/sec and a tape capacity of 400MB. The B20 has two physical drives, whilst the B40 has four. All drives have cartridge loaders containing up to six cartridges.
The C11 and C22 both support a single 36 track tape device, though the C11 supports a single physical drive, whilst the C22 supports two physical drives. Both models support a data rate of 3MB/sec, and a cartridge capacity of 400MB. Each physical device has a standard six cartridge ACL (Automatic Cartridge Loader). Attachment to the host is via ESCON, S/370 Channel, or SCSI-2 differential fast/wide.
The E01 and E11 models both support maximum throughput of 3MB/sec, and a maximum uncompressed capacity of 5.6GB (these units support a 7 cartridge ACL). With compression, this capacity increases to 16.8GB, and the throughput to 6.5MB/sec. Both units attach to the host via a SCSI-2 differential or SCSI-2 differential fast/wide adapter. The E01 is the table top version of the E11 rack mounted model.
The following tape libraries are available.
The Exabyte tape library (IBM model number 0840-001) combines an 8mm helical scan technology device with a 10 cartridge autoloader. The cartridges fit into a removable magazine that offers up to 50GB of storage without compression (up to 100GB can be achieved using the compression feature); the sustained data rate is 500MB/sec, and can reach 1.0MB/sec with compression. Attachment to the system is via a SCSI-2 adapter.
The library has the following performance figures:
This product is supported by ADSM, Legato, and Unitree storage management products. These products are discussed briefly in Higher Level Storage Management Products.
The Lago Systems LS/380L DataWheel** tape library (IBM model number 0562-001) combines two 8mm helical scan technology tape devices with a 54 cartridge removable carousel and loader. The unit offers up to 270GB of data storage in uncompressed form (up to 540GB compressed). The DataWheel attaches to the system unit via a SCSI-2 adapter for both tape drives and the autoloader. An RS232 interface for control of the autoloader is also provided, if required by the software using the device. Peak data transfer rate is 4MB/sec, sustained transfer is 500KB/sec (uncompressed).
The Lago DataWheel has the following characteristics:
This product is supported by ADSM, UniTree, and Legato storage management products. These products are described briefly in Higher Level Storage Management Products.
The 3494 L10 is a single unit that combines a control unit with the automated cartridge loaders, a library manager, the tape devices, and the storage cells for the 0.5" tapes. The cartridge capacity for the unit depends upon whether the optional convenient I/O station for the library is installed or not. Without the I/O station, 240 cartridges can be stored, with it, 210. The I/O station allows cartridges to be easily added and removed from the subsystem. Storage units can be added to the subsystem, each of which provides capacity for 400 further cartridges. Up to seven units can be added to the first, of which up to three may be further drive units, and up to seven may be storage units. The drive units contain either C1A or C2A tape devices, and 300 cartridges. The C1A has a single tape drive, and the C2A has two. The maximum number of drives possible is therefore eight, with 2740 cartridges (one control unit, three drive units, and three storage units). The maximum number of cartridges is 3040, with two tape drives (one control unit, and seven storage units). This gives a maximum storage capacity of 2.4TB uncompressed, 7.2TB compressed. The CXX tape devices support 36 track bi-directional recording.
The C1A and C2A are analogous to the C11 and C22 devices mentioned in Tape Devices. Attachment to the system is via ESCON, System/370 channel, or SCSI-2 differential fast/wide.
The 3494 is supported by the ADSM storage management product which is briefly discussed in Higher Level Storage Management Products.
The 3495 tape library dataserver utilizes the 3490 tape subsystem technology inside an enhanced automated library, along with a library manager. The subsystems attach to the host in the same way as discussed in the section on 3490 tape devices (see Tape Devices).
There are several models, each providing different levels of tape storage capacity:
This model has an actual cartridge capacity of from 5660 to 6440. This gives theoretical storage capacity of 13,584 to 15,456GB.
This model has an actual cartridge capacity of from 8,480 to 10,590. This gives theoretical storage capacity of 20,352 to 25,416GB.
This model has an actual cartridge capacity of from 11,300 to 14,750. This gives theoretical storage capacity of 27,120 to 35,400GB.
This model has an actual cartridge capacity of from 14,120 to 18,910. This gives theoretical storage capacity of 33,888 to 45,474GB.
This model has an actual cartridge capacity of 100,000. This gives theoretical storage capacity of 240,000GB (Wow).
The following optical storage components are available for attachment to the RS/6000.
The following optical devices are available.
The 7209 is a standalone external read/write optical disk drive. Optical technology is discussed in Optical Storage. The 7209 drive has a single read/write head which means that only one side of the single optical cartridge supported by the drive can be accessed at a time. In order to access the other side, the cartridge must be physically removed and turned over by an operator. The 7209 uses a 5.25" double sided optical cartridge with a capacity of 595MB of data per side at a sector size of 512 bytes. Attachment to the host is via a single-ended SCSI adapter and the data transfer rate is 1424KB/sec.
The 7210 is a self powered external CD-ROM device supporting a single 600MB optical read only disk. Optical technology is discussed in Optical Storage. Average access times to files on the CD-ROM range from 200ms to 380ms, with data transfer rates of from 150KB/sec to 330KB/sec depending upon the model. Attachment to the system is via a single-ended SCSI adapter.
There are two models:
The model 001 has an average access time of 380ms, and supports a data rate of 150KB/sec.
The model 005 has an average access time of 200ms, and supports a data rate of 330KB/sec.
Both models are available for mounting inside the system.
The following optical libraries are available.
The 3995 combines multifunction optical drives (the number of drives depends upon the model) with an automated picker and optical cartridge storage to provide access to up to 376GB (unformatted) of optical storage. The 3995 models all support both read/writeable as well as WORM optical technology on both single sided and double sided 5.5" cartridges. Optical technology is discussed in Optical Storage. There are 4 types of cartridge:
There are three models directly attachable to the RS/6000:
The 3995-A63 supports up to 16 optical cartridges giving a maximum total unformatted capacity of 20GB of data. The unit contains a single multifunction optical drive and attaches to the host system via either a SCSI-2 or SCSI-2 differential adapter.
The 3995-063 supports up to 32 optical cartridges giving a maximum total unformatted capacity of 40GB of data. The unit contains two multifunction optical drives, and attaches to the host system via either a SCSI-2 or SCSI-2 differential adapter.
The 3999 163 supports up to 144 optical cartridges giving a maximum total unformatted capacity of 188GB of data. The unit contains four multifunction optical drives and attaches to the host system via a SCSI-2 differential adapter.
Maximum data rates for the 3995 model optical drives are the same as for the IBM 7209 optical drive described in IBM 7209.