Identify the Failed Hard Drive............................21 Replace a Hard Drive..............................22 Replacing Rack Rails................................23 Post-Replacement Procedures............................23 Start Up the Storage Controller..........................23 Send Diagnostic Data Using Dell SupportAssist......................23 Contact Dell Technical Support........................... 24 Power Up the Storage Center Hardware.........................24 Contents...
The information provided in this manual is intended for use by Dell end users. Contacting Dell Dell provides several online and telephone-based support and service options. Availability varies by country and product, and some services might not be available in your area.
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Provides information about Dell Storage Manager releases, including new features, enhancements, fixed issues, and open issues. • Dell TechCenter Provides technical white papers, best practice guides, and frequently asked questions about Dell Storage products. Go to http:// en.community.dell.com/techcenter/storage/. About This Manual...
• Up to seven SC220 expansion enclosures • Any combination of SC200/SC220 expansion enclosures, as long as the total disk count of the system does not exceed 192 • Up to two SC280 expansion enclosures About the SC4020 Storage System...
NOTE: An SC4020 storage system cannot be connected to both SC200/SC220 expansion enclosures and SC280 expansion enclosures at the same time. The SC4020 supports only a single chain of SC200/SC220 expansion enclosures or a single chain of SC280 expansion enclosures.
Figure 3. SC4020 Storage System with Two SC280 Expansion Enclosures Storage Center Communication A Storage Center uses multiple types of communication for both data transfer and administrative functions. Storage Center communication is classified into three types: front end, back end, and system administration. Front-End Connectivity Front-end connectivity provides I/O paths from servers to a storage system and replication paths from one Storage Center to another Storage Center.
SC4020 Storage System Hardware The SC4020 storage system ships with Dell Enterprise Plus drives, two redundant power supply/cooling fan modules, and two redundant storage controllers. Each storage controller contains the front-end, back-end, and management communication ports of the storage system.
Item Name Icon Description • Off – No power • On steady blue – Power is on and firmware is running • Blinking blue – Storage system is busy booting or updating • On steady amber – Hardware detected fault •...
Item Name Icon Description • Steady amber – Fan fault or the storage system is having a problem communicating with the PSU • Blinking amber – PSU is in programming mode AC power fault indicator • Off – Normal operation •...
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Green LEDs 4–7 – High byte hex POST code Serial port (3.5 mm mini jack) Used to perform initial storage controller configurations. In addition, it is used to perform support only functions when instructed by Dell Technical Support. Two options: —...
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Item Control/Feature Icon Description LEDs for the two 16 Gb Fibre Channel ports: • All off – No power • All on – Booting up • Blinking amber – 4 Gbps activity • Blinking green – 8 Gbps activity • Blinking yellow –...
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Green LEDs 4–7 – High byte hex POST code Serial port (3.5 mm mini jack) Used to perform initial storage controller configurations. In addition, it is used to perform support only functions when instructed by Dell Technical Support. Two iSCSI ports (Slot 1/Port 1 —...
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Item Control/Feature Icon Description MGMT port (Slot 3/Port 1) — Ethernet/iSCSI port that is typically used for storage system management and access to the BMC NOTE: To use the MGMT port as an iSCSI port for replication to another Storage Center, a Flex Port license and replication license are required. To use the MGMT port as a front-end connection to host servers, a Flex Port license is required.
SC4020 Storage System Drives The SC4020 storage system supports only Dell Enterprise Plus hard disk drives (HDDs) and Dell Enterprise solid-state drives (eSSDs). Figure 10. SC4020 Storage System Drive Indicators Item Control/Feature Indicator Code Drive activity indicator • Blinking green – Drive activity •...
Always follow these safety precautions to avoid personal injury and damage to Storage Center equipment. If equipment described in this section is used in a manner not specified by Dell, the protection provided by the equipment could be impaired. For your safety and protection, observe the rules described in the following sections.
• Dell recommends that you always use a static mat and static strap while working on components in the interior of the storage system chassis. • Observe all conventional ESD precautions when handling plug-in modules and components. • Use a suitable ESD wrist or ankle strap.
CAUTION: Shutting down the storage system results in a system outage. 4. Click OK. After the storage system shuts down, unplug the power cables from the power supply/cooling fan modules. Replacing the Front Bezel The front bezel is a cover for the front panel of the storage system. About this task The front bezel must be removed from the front panel when replacing hard drives.
To determine which hard drive failed, use the Dell Storage Manager Client. Steps 1. Use the Dell Storage Manager Client to connect to the Storage Center. 2. Click the Hardware tab. 3. In the Hardware tab navigation pane, select the Storage Center.
Allow several seconds for the storage system to recognize the hard drive and determine its status. 7. Replace the front bezel. 8. In the Dell Storage Manager Client, make sure that the replacement hard drive is recognized and shown as up and healthy. Next steps Use SupportAssist to send diagnostic data to Dell Technical Support.
Use SupportAssist to send diagnostic data to Dell Technical Support. Post-Replacement Procedures Start up the storage controller (if it was previously shut down) and use SupportAssist to send diagnostic data to Dell Technical Support. Start Up the Storage Controller If the storage controller was previously shut down, perform this procedure to start it up.
Contact Dell Technical Support Contact Dell Technical Support to inform them that you completed a repair. Request that Dell Technical Support re-enable alerts for the storage system and ask for a post-installation system check. Power Up the Storage Center Hardware Perform these steps to power up the Storage Center hardware after powering off the hardware or after a power outage.
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Table 3. Storage Connectivity Storage Connectivity Configurations Supports up to 192 drives in one redundant-path SAS chain Supports up to 14 SC200 expansion enclosures and up to 7 SC220 expansion enclosures Table 4. RAID Redundant Array of Independent Disks (RAID) Controller...
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Table 5. Back Panel Ports(continued) Back-Panel Ports Connectors (per Storage Controllers) Serial connector Used for initial configuration and support only functions Table 6. LEDs LED Indicators Front panel • One two-color LED indicator for system status. • One single-color LED indicator for power status. •...
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Table 10. Environmental Environmental For additional information about environmental measurements for specific storage system configurations, see dell.com/ environmental_datasheets. Temperature Operating 10°C to 35°C (40°F to 95°F) with a maximum temperature gradation of 20°C per hour Storage –40° to 65°C (–40° to 149°F) at a maximum altitude of 12,000 m (39,370 ft)