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Oracle® SL8500 StorageTek Modular Library System Systems Assurance Guide E24254-08 |
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# 6 Site Planning

This chapter provides planning information and requirements to consider before installation of the SL8500. Key planning considerations include:

A site survey which addresses the following issues:

- System configuration: type of customer platform used

- Applications: number and type of system backups, type of backup and archive software, type of library management software (such as ACSLS or ELS/HSC)

- Hardware configuration: library capacity, tape drive type, media type

- Network configuration: connectivity options, required network devices and cables

- Content Management: partitioning plans, workloads and host contention issues

Site preparation:

- Physical space: floor space, ceiling height, placement

  - A floor template is available to help with planning. This template is an actual size, multi-module design made of corrugated plastic.

- Weight: floor support, weight distribution

- Cabling routes: floor cutouts, cabling runs, conduit type

- Power: source type, required amount

- Environment: airflow, contaminants, fire suppression

- Compatibility: tape drives, media, software, accessory rack

- Expansion: expansion module addition, library complex addition

## Physical Planning

The dimensions and weights of the SL8500 library are listed below:

Table 6-1 Library Weights and Measures

Component | Length | Width | Height | Empty Weight | Full Weight
--- | --- | --- | --- | --- | ---
Base Library | 109 in. (276.9 cm) | 67.25 in. (170.8 cm) | 93.15 in. (236.6 cm) | 3,300 lbs (1497 kg) | 6,250 lbs (2835 kg)
1 expansion module | 146.5 in. (372.1 cm) | 67.25 in. (170.8 cm) | 93.15 in. (236.6 cm) | 4,150 lbs (1883 kg) | 8,025 lbs (3640 kg)
2 expansion modules | 184 in. (467.4 cm) | 67.25 in. (170.8 cm) | 93.15 in. (236.6 cm) | 5,000 lbs (2268 kg) | 9,800 lbs (4445 kg)
3 expansion modules | 221.5 in. (562.6 cm) | 67.25 in. (170.8 cm) | 93.15 in. (236.6 cm) | 5,850 lbs (2654 kg) | 11,575 lbs (5250 kg)
4 expansion modules | 259 in. (657.8 cm) | 67.25 in. (170.8 cm) | 93.15 in. (236.6 cm) | 6,700 lbs (3039 kg) | 13,350 lbs (6055 kg)
5 expansion modules | 296.5 in. (753.1 cm) | 67.25 in. (170.8 cm) | 93.15 in. (236.6 cm) | 7,550 lbs (3425 kg) | 15,125 lbs (6860 kg)
Drive&Electronics Mod. | 30.0 in. (76.2 cm) | 67.25 in. (170.8 cm) | 93.15 in. (236.6 cm) | 1,300 lbs (590 kg) | 2,725 lbs (1236 kg)
Robotics Interface Mod. | 30.0 in. (76.2 cm) | 67.25 in. (170.8 cm) | 93.15 in. (236.6 cm) | 775 lbs (352 kg) | 1,825 lbs (828 kg)
Storage Expan. Mod. | 37.5 in. (95.25 cm) | 67.25 in. (170.8 cm) | 93.15 in. (236.6 cm) | 850 lbs (386 kg) | 1,775 lbs (805 kg)
Customer Interface Mod. | 37.5 in. (95.25 cm) | 67.25 in. (170.8 cm) | 93.15 in. (236.6 cm) | 1,225 lbs (556 kg) | 1,700 lbs (771 kg)
Pass-thru port frame | 59.4 in. (150.8 cm) | 6.76 in. (17.17 cm) | 91 in. (231 cm) | N/A | 266 lbs (121 kg)
Front Service Area | 26 in. (66 cm) | 71.25 in. (181 cm) | N/A | N/A | N/A
Rear Service Area | 35 in. (89 cm) | 74.30 in. (188.7 cm) | N/A | N/A | N/A

Empty weight: Base library configuration with N+1 power and four robots; without tape drives or tape cartridges.

Full weight: All tape drives, DC power supplies, and cartridges, with 2N power, four robots, doors and facade, but does not include a full rack.

### Floor Template

A floor template is available to help with planning. This template is an actual size, multi-module design made of corrugated plastic.

Figure 6-1 Floor Planning Template

## Floor Requirements

The SL8500 library does not require a raised floor. The primary concern is that the environmental requirements are met. As long as there is adequate airflow and environmental specifications are met, a raised floor is not required.

### Weight

Ensure the site floor can physically support the weight of the library.

Depending on the number of modules, tape drives, and tape cartridges, the weight of the library can vary. See Table 6–1, " Library Weights and Measures" for more information.

Additionally, if the equipment must be transported on elevators, the elevator cars must be capable of safely handling the weight. See "Shipping Weights and Dimensions" on page 7-4 for more information.

#### Weight Distribution Pads

The customer's floor must be capable of supporting 454 kg (1,000 lb) per weight distribution pad. These pads measure 4 inches by 8 inches. The minimum weight limit includes the modules plus a factor of safety to accommodate torque values, installation procedures, and component variances.

The figure below shows the weight distribution pad placements for the various modules. The distribution pads are represented by the dark grey boxes.

Note: Notice the placement and direction of the pads.

Figure 6-2 Weight Distribution Pad Locations (viewed from top of library)

### Co-planar Requirements

The customer's floor should be laser-leveled before receiving any equipment. The library modules must be level across the width (from left to right) and installed on the same horizontal plane to within ±25 mm (1 in.) tolerance.

WARNING: Frame damage, premature wear, and targeting errors may occur if the library floor is not co-planar.

For future library complex expansion, check the entire floor adjacent to the library for pass-thru port operations or in front of the library for storage expansion modules.

Because the HandBots travel along rails, the library must be adjusted for the rails to be on the same plane (co-planar). Some customer floors may contain slight slopes in them (despite the laser leveling requirement).

- The floor variations cannot exceed 28 mm ± 0.8 mm (1.1 in. ± 0.0325 in.) throughout the length of the library.

## Ceiling Requirements

The figure below shows the upper sections of the Drive and Electronics Module and the Robotics Interface Module. These modules must be installed on top of the lower modules. To install the upper modules:

- The recommended method is to hang the modules on the clamps then swing the upper modules into place. This method requires at least 239 cm (94 in.) of floor-to-ceiling clearance and three people to lift the module.

- The optional method is to remove the clamps (for clearance), lift the upper modules up and slide them over the lower modules. This requires four people to accomplish (one person on each corner) and 236.6 cm (93.15 in).

  CAUTION: Overhead hazard: Make sure that sprinkler heads, sensors, and other equipment that may hang from the ceiling are not interfered with when you install the upper modules.

Figure 6-3 Upper Module Installation

### Height Adjustments

The figure below shows the minimum and maximum library height specifications:

- Minimum height =231.4 cm (91 in.)

- Maximum height =236.6 cm (93.15 in.)

On a level floor, the first module's height, between the module and floor, should be adjusted to 25.4 mm ± 0.8 mm (1 in. ± 0.0325 in.). The absolute minimum module-to-floor height permitted is 19 mm (0.75 in.). Following these guidelines allows you to adjust the library to meet the "Co-planar Requirements".

Figure 6-4 Height Adjustment Specifications

### Clearances

The table below lists the clearances—library to ceiling—required to install side covers, front and rear doors, and the upper modules.

Table 6-2 Overhead Clearances

Overhead Clearance | Description
--- | ---
1.9 cm (0.75 in.) | Side cover installation
1.3 cm (0.5 in.) | Upper robotics interface module installation
2.5 cm (1 in.) | Facade installation Hanging the front and rear doors on the hinges Upper drive and electronics module installation
4.5 cm (1.75 in.) | Customer interface module roof installation Storage expansion module roof installation

To calculate maximum height and installation clearances, use the library height range and add the overhead clearance.

## Cabling

The library doors have four notches for routing interface and power cables to the tape drives and PDUs. There are two notches in each door: one on top and one on bottom.

The figure below shows an example of cable routing using fibre-optic interface cables. This would be the same method for the power cables on the right side. Figure 6-7, "Internal Conduit and Cable Routing" shows guidelines for internal cable or conduit routing.

Remember: when routing cables or conduit inside the library, make sure they do not interfere with the removal and replacement of any components, such as the DC power supplies, tilting open the electronics control module, sliding out the tape drives, or the accessory racks or rack equipment.

Figure 6-5 Cabling Routing

Table 6-3 Door Notch Dimensions

Location | Length | Width | Location | Length | Width
--- | --- | --- | --- | --- | ---
Top Left | 25 cm (10 in.) | 3.8 cm (1.5 in.) | Top Right | 25 cm (10 in.) | 3.8 cm (1.5 in.)
Bottom Left | 40.6 cm (16 in.) | 7 cm (2.75 in.) | Bottom Right | 33 cm (13 in.) | 7 cm (2.75 in.)

### Floor Cutouts

Floor cutouts for cable routing must be supplied for the library. Cables include:

- Power cables

- Ethernet cables

- Interface cables

The figure below shows an example with dimension for the floor cutouts which are placed near the two, rear corners of the Drive and Electronics Module.

Figure 6-6 Floor Cutouts for Power and Signal Cables

The recommended "rough-in" AC feed (power cable) measured from the top of the raised floor to the input of the power distribution unit is 46 cm (18 in.).

Note: You can also route cables from the ceiling. See "Cabling," for more information.

### Internal Cabling

When routing cabling, avoid the accessory racks, tape drives, the electronics module, and any obstructions noted in the figure below.

If the existing fire suppression cutouts are not being used, use flexible conduit or cables to route power connections to the AC power supply from above the library. If the fire suppression cutouts are being used, new cutouts should be made in the frame to route conduit or cables to the AC power supply.

Optional routing to the left of the tape drive bays may be used for clearance. However, use flexible conduit for the Tape Drive DC power supply grid.

Figure 6-7 Internal Conduit and Cable Routing

### Tape Drive Cable

By consolidating network components in the SL8500 rack areas, cabling and establishing a storage area network (SAN) is less difficult. The figure below shows network components (Fibre Channel switches and Ethernet hubs) in the rack space of the SL8500 library with 16 tape drives.

Figure 6-8 Cabling Tape Drives (example only, figure is not exact)

Remember the following when routing cabling:

- Every tape drive needs an interface cable.

- Not all tape drives require an Ethernet cable.

- When ordering cables, plan for 1–2 m (3–7 ft) of slack cable for routing.

Make sure you have the correct tape drive and cartridge tape associated for every LSM in the library to support mixed media Any Cartridge Any Time.

## Hardware and Expansion Planning

There is a set of guidelines that should be followed when expanding the library. This includes adding drives, installing redundant electronics, or creating a library complex.

### Drive and Electronics Module

The figure below shows the location of components at the rear of the library (the Drive and Electronics Module). Up to 64 drives and 4 rack modules can be placed in the library. The power configuration and number of power supplies required depends on the library configuration selected. See Chapter 2, "Features, Software, and Connectivity" for more information.

Figure 6-9 Drive and Electronics Module Planning

### Electronics Control Module

The figure below shows the electronics control module (ECM) which resides in a card cage in the rear of the library. The ECM is split into two parts and can hold two independent and redundant card sets and four AC-to-DC converters.

Figure 6-10 Electronic Control Module

### Accessory Racks

The SL8500 library provides space where up to four standard RETMA 19 inch racks can be installed. Oracle cannot mandate what the customer installs in these racks; therefore, certain guidelines should be followed to prevent voiding the warranty.

Table 6-4 Rack Guidelines

Description | Value/Range
--- | ---
Accessory rack | The accessory rack is mounted on slides rated for 80 kg (175 lb). Safe load is 64 kg (140 lb).
Mounting hardware (equipment in the rack) | Components must function in a vertical position. Rails are not provided; use the mounting hardware supplied by the manufacturer.
Height | 48.25 cm (19 in.)
Width | 27.3 cm (10.75 in.) including power strip
Depth | 72 cm (28 in.) safe length is 66 cm (26 in.)
Mount-points | 72.4 cm (28.5 in.) between mounting points
Thermal Requirements | 880 watts (3,000 Btu/hr) per rack module.
Power | 200–240 VAC, 50 to 60 Hz, 4 Amps. Six IEC320 C13 outlet receptacles

Two of the racks (2 and 4) receive power from the primary AC power grid. The other two racks (1 and 3) require the 2N power configuration.

### Tape Drives and Cartridges

The supported tape drives fit into a drive tray that slides into the slots of the drive bay in the rear of the library. The weights below are for reference only, check the drive specific documentation for the weights and measures of a specific generation of drive.

Table 6-5 Drive Tray Weights and Measures

Drive Tray | Height | Width | Length | Weight
--- | --- | --- | --- | ---
Drive tray only | 10.8 cm (4.25 in.) | 16.5 cm (6.5 in.) | 85 cm (33.5 in.) | 4.3 kg (9.5 lb)

The total tape drive weights including drive trays are listed below, along with the tape cartridge weights.

Table 6-6 Tape Drive and Cartridge Weights

Drive Type | Tape Drive Weight (with drive tray) | Cartridge Tape Weight
--- | --- | ---
T9840 | 8.2 kg (18.0 lb) | 262 g (9.2 oz)
T9940 | 11 kg (24.3 lb) | 262 g (9.2 oz)
T10000 | 9.4 kg (20.75 lb) | 264 g (9.31 oz)
LTO | 6.9 kg (15 lb) | 210 g (7.4 oz)
SDLT | 6.7 kg (14.8 lb) | 222.5 g (7.85 oz)

### Pass-thru Port Planning

For non-disruptive growth, the preferred method is to add libraries from right to left (viewed from front/CAP-side of library complex). However, the library can grow in the other direction, from left to right, but this requires a disruption to re-configuration the system, re-number the LSMs, and re-IPL the library.

The figure below shows two examples of three libraries connected with PTPs.

- Example A shows the LSM numbering as you add libraries to the left. Adding another library (C) to the left of the library complex increases the LSM numbering sequentially. This is the preferred method.

- Example B shows the LSM numbering as you add libraries to the right. Adding another library (C) to the right of the library complex requires a reconfiguration of LSM numbering.

Figure 6-11 Pass-thru Port Planning Example

To implement the pass-thru port feature, you must have:

- Accessory racks: 1 rack (required) 2 racks for power redundancy

- Inter-library Communications kit

- PTP conversion bill and instructions

- Software upgrade and reconfiguration

The following terms and definitions apply to SL8500 PTP operations:

- Home library: Provides power, signal, and control lines to the PTP mechanisms.

- Away library: Located on the left side of a Home library, as viewed from the front.

- Source: Contains the home slot for cartridges that pass to adjacent libraries.

- Destination: Contains the tape drive or slot location in the adjacent library where the cartridge will be mounted or stored.

## Power Planning

It is highly recommended to have a licensed electrician install the library's external AC wiring. For more information about power requirements of the SL8500, see Chapter 4, "Power".

### AC Power

There are two possible AC power configurations for the library.

- N+1 power: the standard power configuration for DC power redundancy.

- 2N power: an optional configuration for both AC and DC power redundancy.

  Note: The 2N power distribution unit must connect to a separate power source to provide both AC and DC power redundancy.

There are three possible power source options:

- Delta: 200–240 VAC, three phase, 50–60 Hz, 40 Amps

- Wye: 200–240VAC, three phase, 50–60 Hz, 24 Amps

- Single-phase: 200–240 VAC, 50–60 Hz, 24 Amps (3-separate inputs)

For more information about AC power requirements of the SL8500, see "AC Power Options".

### DC Power

The DC power grids use load sharing power supplies. The number of power supplies needed depends on the library configuration. For more information about DC power options, see "DC Power"

## Environmental Requirements

There are several environmental requirements, such as temperature and humidity, airflow, and controlling contaminates that should be followed to maintian optimal reliability of the SL8500 library.

### Temperature and Humidity

Optimal reliability of the SL8500 library is achieved if the environment is maintained between the recommended ranges.

Table 6-7 Environmental Ranges

Description | Optimum | Recommended | Full Range
--- | --- | --- | ---
Temperature | 22°C (72°F) | 20° –25°C (68° –77°F) | Operating: 16° to 32°C (60° to +90°F) Shipping: -30° to +49°C (-23° to +120°F) Storing: +4.4° to +32°C (+40° to +90°F)
Relative Humidity | 45% | 40% –50% | Operating: 20% to 80% Shipping: 5% to 90% Storing: +20% to 80%
Wet Bulb | +25.6°C (+78°F) maximum, non-condensing | N/A | N/A

Note: Although this equipment is designed to operate in environmental conditions of 20% to 80% humidity, industry best practices recommends computer rooms maintain a relative humidity of 40% to 50% for best performance.

### Seismic or Earthquake Ratings

The requirements for seismic compatibility vary dramatically throughout the world. As such, a standard "seismic" feature for the SL8500 modular library system is not offered.

It is recommended that any customer who has seismic concerns work with local experts who are familiar with the local code and requirements. Professional Services can also be engaged to help coordinate this activity.

### Air Flow

The air flow required to cool the SL8500 library depends on the total number of components installed, such as tape drives, load sharing DC power supplies, and accessory racks.

Table 6-8 Air Flow Requirements (at 1atm, 22°C/72°C)

Component | Required Air flow | Quantity
--- | --- | ---
Tape drive | 0.57m3/min. (20 ft3/min.) each | 64 max
DC power supply | 0.71m3/min. (25ft3/min.) each | 24 max
Rack Modules | 13.59m3/min. (480ft3/min.) each | 4 max
Electronics Module | 4.42m3/min. (156ft3/min.) each | 1

A maximum configured library with 64 tape drives, 24 DC power supplies, four rack modules, and the electronic control module would require:

- 112.0 m3/min. (3956 ft3/min.) of air supply to avoid recirculation.

Most configurations are smaller than this and require less air flow. For example, 12 tape drives split between drive bays for redundancy, one robot on each level, one rack module, and the electronic control module would require:

- 33.30 m3/min. (1176 ft3/min.)

The layout of the data center should account for the cooling requirements of SL8500 as well as other equipment in the center—possibly through the concept of having a cool aisle and hot aisle in accordance with environmental best practices and controls.

### Airborne Contaminants

Control over contaminant levels in a computer room is an extremely important consideration when evaluating an environment. The impact of contamination on sensitive electronic hardware is well recognized, but the most harmful contaminants are often overlooked because they are so small.

Automated Tape Library components and electronics, tape drives, and media are subject to damage from airborne particulates. The operating environment must adhere to the requirements of:

- ISO 14644-1 Class 8 environment

For more information see Appendix C, "Controlling Contaminants".

Gasses that are particularly dangerous to electronic components include chlorine compounds, ammonia and its derivatives, oxides of sulfur and petrol hydrocarbons. In the absence of appropriate hardware exposure limits, health exposure limits must be used.

Humidification with chlorinated water is a common source of damaging airborne chlorine. Appropriately designed carbon filters must be used to insure safe levels of airborne chlorine when chlorinated water is used for humidification.

The following table lists some recommendations for gaseous limits.

Table 6-9 Gas Limit Recommendations

Chemical Name | Formula | ASHRAE | OSHA (PEL) | ACGIH | NIOSH
--- | --- | --- | --- | --- | ---
Acetic Acid | CH3COOH | Not defined | 10 ppm | Not defined | Not defined
Ammonia | NH | 3500 µg/m3 | 350 ppm | 25 ppm | Not defined
Chlorine | Cl | 2100 µg/m3 | 31 ppm (c) | Not defined | 0.5 ppm (c)
Hydrogen Chloride | HCl | Not defined | 5 ppm (c) | Not defined | Not defined
Hydrogen Sulfide | H2S | 50 µg/m3 | 320 ppm (c) | 10 ppm | 10 ppm
Ozone | O3 | 235 µg/m3 | 30.1 ppm | Not defined | Not defined
Petrol-hydrocarbons | CnHn | Not defined | 500 ppm | 75 ppm | 300 ppm
Sulfur Dioxide | SO2 | 80 µg/m3 | 35 ppm | 2 ppm | 0.5 ppm (c)
Sulfuric Acid | H2SO4 | Not defined | 1 ppm | Not defined | 1 ppm (c)

PEL: Permissible Exposure Limit

ppm: Parts Per Million

µg/m3: Micrograms Per Cubic Meter

(c): ceiling

## Fire Suppression Planning

The library does not ship with a Fire Suppression System installed, although features have been incorporated into the library to allow for one.

As a standard safety feature, the library comes equipped with a photo-electric smoke detector that removes all power from the library if smoke is detected in and around the library. Power is restored to the library by resetting the AC circuit breakers on the power distribution units.

Professional Services offer fire suppression systems which are installed on site. Visit the Professional Services Web site for more information about these services or contact your local Professional Services representative (names are also listed on this Web site).

The figure below shows the cutouts for fire suppression planning.

Note: The measurements are without covers and doors.

Figure 6-12 Fire Suppression Ceiling Access (viewed from the top of the library)

The following list describes the key fire supression features:

- Openings - two per module that measure 5 cm (2 in.) diameter

- Plates - these cover the openings and measure 7 cm (2.75 in.) square and 1 cm (0.48 in.) thick. The contractors can use these plates to drill in to for a custom fit of the nozzles.

- Screws -two T25 Torx screws

- Nozzle protrusion (clearance) - 1 cm (0.4 in.) from the top of the library for robotic operation