Dell PowerVault MD1200 manual

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  • Brand: Dell
  • Product: Disk array
  • Model/name: PowerVault MD1200
  • Filetype: PDF
  • Available languages: English, French

Table of Contents

Page: 0
DELLTM
POWERVAULTTM
MD1200 & MD1220
TECHNICAL GUIDEBOOK
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** Available in Q3 2010 2
Table of Contents
1 Product Comparison ...................................................................................................................... 3
1.1 Overview ................................................................................................................................ 3
2 New Features................................................................................................................................. 3
3 System Overview ........................................................................................................................... 4
3.1 Customer driven product priorities.......................................................................................... 4
3.2 Product Positioning ................................................................................................................ 4
3.3 PowerVault™ MD1200 and MD1220 Product Features Summary.......................................... 5
4 Product Support ............................................................................................................................. 6
4.1 Host-RAID Adapter Support ................................................................................................... 6
4.2 Host Server Support............................................................................................................... 6
4.3 Management Software Support.............................................................................................. 6
4.4 Operating System Support ..................................................................................................... 6
4.5 Drive Support ......................................................................................................................... 7
5 Chassis Overview .......................................................................................................................... 8
5.1 Dimensions and Weight.......................................................................................................... 8
5.2 Front View and Features ........................................................................................................ 9
5.3 Back View and Features....................................................................................................... 12
5.4 Hard Drive Indicators............................................................................................................ 13
5.5 Enclosure Management Module ........................................................................................... 14
5.6 Power Indicator Codes ......................................................................................................... 16
5.7 Solution Configurations ........................................................................................................ 16
5.8 Connecting the Enclosure .................................................................................................... 19
5.9 Field Replaceable Units (FRU)............................................................................................. 20
6 Environmental.............................................................................................................................. 20
6.1 Power Supply Specifications ................................................................................................ 20
6.1.1 Thermal management................................................................................................... 21
6.1.2 Over-Temperature Shutdown ....................................................................................... 21
6.2 Environmental Specifications................................................................................................ 22
7 Rack Information.......................................................................................................................... 22
7.1 Overview .............................................................................................................................. 22
7.2 Rack Rail Kit......................................................................................................................... 22
8 Additional Information .................................................................................................................. 23
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** Available in Q3 2010 3
1 Product Comparison
1.1 Overview
Evolution of Dell™ PowerVault™ DAS portfolio with the introduction of 6Gb/s SAS (SAS 2.0) in our
JBOD arrays. These arrays will connect to Dell™ PowerEdge™ 11G servers using the Dell™
PowerEdge™ RAID (PERC) H800 Host-RAID Adapter. The MD1200 is follow-on to the MD1000, and
the MD1220 is follow-on to the MD1120.
Table 1 shows a comparison between these versions.
Table 1. Comparison of MD1220 and MD1200 to previous MD1120 and MD1000
Feature/Spec
NEW
MD1220
MD1120
NEW
MD1200
MD1000
Rack Units 2U 2U 2U 3U
Slot Form
Factor
2.5 inch 2.5 inch 3.5 inch 3.5 inch
Slots 24 24 12 15
Interface 6Gb (SAS 2.0) 3Gb 6Gb (SAS 2.0) 3Gb
Host-RAID
Adapter
PERC H800 PERC 6/E PERC H800
PERC 6/E
PERC5/E
EMM Dual Dual Dual Dual
Power
Supply/Fan
Module
Dual auto-
sensing
Dual
Dual auto-
sensing
Dual
HDD Support
2.5 inch SAS
HDD
2.5 inch SAS
HDD
3.5 inch SAS
HDD
**2.5 inch SAS
HDD
3.5 inch SAS
HDD
3.5 inch SATA
HDD
SSD Support**
**2.5 inch SAS
SSD
N/A
**2.5 inch SAS
SSD
N/A
Storage
Management
(min rev)
Open Manage
(6.2)
Open Manage
(5.4)
Open Manage
(6.2)
Open Manage
(4.5.1)
RAID Levels
0, 1, 5, 6, 10,
50, 60
0, 1, 5, 6, 10,
50, 60
0, 1, 5, 6, 10,
50, 60
0, 1, 5, 6, 10,
50, 60
2 New Features
The PowerVault™ MD1200 and MD1220 offer the following new features:
• 6Gb/s SAS (SAS 2.0)
o Double the throughput performance
o Self Encrypting Drives (SED)
• PERC H800 Host-RAID adapter
o Increased IOPs performance
• Increased Density of the 3.5” (MD1200) enclosure (12 drive 2U)
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• Increased Capacity – Daisy chain up to 8 enclosures behind a PERC H800
• Increased Flexibility
o Mix 2.5” (MD1220) and 3.5” (MD1200) enclosures behind a PERC H800
o Mix 2.5” and 3.5” drives in the MD1200**
• Supports SAS Drives only; HDDs at 7.2K, 10K, and 15K rpm and SSD**
3 System Overview
3.1 Customer driven product priorities
• Internal Storage no longer enough: Server storage running out, server applications are
beginning to bog down, need to move to an external, direct attach storage solution.
• Single Server Applications: Storage expansion for a single server where clustering and
availability are not concerns.
• Capacity Intensive Application Storage (MD1200): Looking for storage to support very a
large volume of data, great solutions for companies that need a low cost per GB for storage.
• Performance Intensive Application Storage (MD1220): Looking for storage to support very
high performance, transaction intensive applications like e-mail, database, OLTP (online
transition processing), and data warehousing.
• Space and Power Conservation (MD1220): Have space or power constraints and looking for
high efficiency per U of rack space
3.2 Product Positioning
• Dell™ PowerVault™ MD1200 direct attached storage array offers versatility and high capacity
storage for mainstream applications, with optimal performance in sequential (streaming)
applications.
o Easy to expand your server capacity: The PowerVault™ MD1200 is engineered to
seamlessly expand the capacity of PowerEdge™ servers. This expansion array can
support 12, 3.5 or 2.5 inch SAS HDDs or SSDs** drives in a 2U array and expands up to
8 arrays behind a single PERC H800 Host-RAID adapter.
o Versatility and flexibility to meet most business needs: The PowerVault™ MD1200
is Dell’s most versatile direct attach storage array. With the ability to mix 2.5 inch and
3.5 inch enclosures behind a single PERC H800 Host-RAID adapter, combined with
support for 2.5 inch drives**, PowerVault™ MD1200 delivers capacity and performance
to support most customer deployments.
• Dell™ PowerVault™ MD1220, the energy-efficient, small-form-factor (SFF), 2.5-inch drive
expansion enclosure, provides the performance required for the most demanding applications in
a simple, energy-efficient direct-attached storage array.
o Optimizing Performance, Enhancing Security While Doubling the Throughput: The
PowerVault™ MD1220 leverages SAS 2.0 technology, which doubles the throughput
with a 6Gb/s SAS interface and offers performance optimization with automatic I/O load
balancing across redundant paths and enhanced security with new self-encrypting drive
(SED) support.
o Improved efficiency: The PowerVault™ MD1220 improves energy efficiency over
previous generation, with new 80PLUS(R) Silver Certified power supplies. This
enhancement augments the efficiencies already gained with 2.5-inch drives and variable
speed fans.
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3.3 PowerVault™ MD1200 and MD1220 Product Features Summary
Table 2. PowerVault™ MD1200 and MD1220 Features and Descriptions
Feature MD1200 MD1220
Rack Height 2U 2U
Host interface 6Gb/s SAS (SAS 2.0) 6Gb/s SAS (SAS 2.0)
Number of Drive bays 12 – 3.5” 24 – 2.5”
Expandability (daisy chain) 8 enclosures per PERC H800
(4 enclosures per port) for a
total of 96 drives
Redundant Path: up to 4
enclosures per PERC H800
Daisy-chain not supported
with Split mode
8 enclosures per PERC H800
(4 enclosures per port) for a
total of 192 drives
Redundant Path: up to 4
enclosures per PERC H800
Daisy-chain not supported
with Split mode
Manageability In-Band via SES In-Band via SES
Backplane Options Unified (default) or Split mode Unified (default) or Split mode
Drive Support SAS HDD and SAS SSD** SAS HDD and SAS SSD**
Host-RAID adapter PERC H800 PERC H800
Cluster Support PERC H800: No PERC H800: No
Rack or Stand alone Tower Rack Only Rack Only
Drive Hot Plug support Yes Yes
Hot Plug Fans/blowers Yes – Dual combined
fan/power supply module
Yes – Dual combined
fan/power supply module
Hot Plug Power supplies Yes – Dual combined
fan/power supply module
Yes – Dual combined
fan/power supply module
SAF-TE, SES Support SES only SES only
Enclosure Management
configurations
Dual Redundant – SBB 2.0
compliant
Dual Redundant – SBB 2.0
compliant
Power Supply configurations Redundant
Auto-Sensing
Redundant
Auto-Sensing
Fans/blowers Redundant Redundant
Chassis Dimensions Height 8.68 cm (3.41 inches)
Width 44.63 cm (17.57 inches)
Depth 60.20 cm (23.70 inches)
Height 8.68 cm (3.41 inches)
Width 44.63 cm (17.57 inches)
Depth 54.90 cm (21.61 inches)
Weight Weight (max config) 28.39 kg
(62.6 lb)
Weight (empty) 8.84 kg (19.5 lb)
Weight (max config) 23.31 kg
(51.4 lb)
Weight (empty) 8.61 kg (19 lb)
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4 Product Support
4.1 Host-RAID Adapter Support
The PowerVault™ MD1200 and MD1220 require the PERC H800 for Server connectivity. The PERC
H800 is a PCIe 2.0, dual port (2 x4), hardware RAID controller offering 512MB standard battery-backed
cache and RAID level support for RAID 0, 1, 5, 6, 10, 50, and 60. The key features of the PERC H800:
 6Gb/s SAS (SAS 2.0)
 Enables daisy-chaining up to 8 enclosures (4 per port)
 Enables mixing 2.5-inch and 3.5-inch enclosures in the same daisy-chain
 Enables Redundant Path with Automatic I/O load balancing
 Supports Self-Encrypting Drive (SED)
o Requires specific SED drive part numbers
For additional details on PERC H800, visit the PERC web page at www.dell.com/PERC.
4.2 Host Server Support
The PERC H800 is supported with Dell™ 11th
Generation PowerEdge™ Servers. Refer to Table 3 for
PowerEdge™ Servers that support the PERC H800. For the latest PERC H800 support matrix, visit the
PERC web page at www.dell.com/PERC.
Table 3. PowerEdge™ Servers that support PERC H800 (at initial product launch)
Rack Servers Tower Servers
PE R210
PE R410
PE R510
PE R610
PE R710
PE T310
PE T410
PE T610
PE T710
4.3 Management Software Support
The Dell™ PowerVault™ MD1200 and MD1220 enclosures are managed via the management
software provided for the PERC H800. The Dell™ PERC H800 is supported with Dell™ 11th
Generation PowerEdge™ Servers and managed via OpenManage™ Storage Management (minimum
version 6.2).
4.4 Operating System Support
The Dell™ PowerVault™ MD1200 and MD1220 enclosures, via PERC H800, support all major
enterprise server operating systems consistent with the Dell™ 11G PowerEdge™ servers and Dell™
OpenManage™ Storage Management (minimum version 6.2) software. This includes Microsoft™
Windows™ Server 2003 and 2008, Red Hat™ Linux 4 and 5, and SUSE™ Linux 10 and 11. For more
specific details on supported operating systems, refer to the PERC web page (www.dell.com/PERC) or
OpenManage™ 6.2 support matrix.
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4.5 Drive Support
Dell™ PowerVault™ MD1200 and MD1220 enclosures support SAS hot-pluggable HDDs (hard-disk
drives) and SSDs** (solid-state drives). MD1200 allows for both 3.5-inch and 2.5-inch** form factor
drives, and MD1220 allows for 2.5-inch form factor drives. Refer to Table 4 for Drive Support details.
Table 4. Drive Support
Form Factor Speed (rpm) Capacity (GB)
2.5” SAS
HDDs up to 6Gb/s
SSDs up to 3Gb/s
7,200 500 GB
10,000 146 GB
300 GB
15,000
73 GB
146 GB
SSD** 150 GB
3.5” SAS
HDDs up to 6Gb/s
7,200
500 GB
1000 GB (1 TB)
2000 GB (2 TB)
15,000
300 GB
450 GB
600 GB
 SATA interface drives are not supported with the Dell™ PowerVault™ MD1200 and MD1220
enclosures.
 6Gb/s SAS interface HDDs and 3Gb/s SAS interface SSDs are configured in the MD1200 and
MD1220, from Dell’s factory, and 3Gb/s SAS interface HDDs are supported in the field with the
supported MD1200 or MD1220 carrier.
 The front bezel of the system contains a lock. A locked bezel secures the system hard drives.
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5 Chassis Overview
5.1 Dimensions and Weight
The PowerVault™ MD1200 and MD1220 enclosures use a rack mount 2U chassis.
Dimensions and Weight
Table 5. Detailed Dimensions (mm)
Model
Number
Xa Xb Y
Za
with
bezel
Za
with
bezel
Zb Zc
Max Sys
Weight
(kg)
PV MD1200
481.5 446.3 86.8 38.0 19.0 561.0 602.0 28.39
PV MD1220
481.5 446.3 86.8 38.0 19.0 508.0 549.0 23.31
Figure 1. MD1200 and MD1220 Dimensions
PowerVault™ MD1200: Weight (maximum configuration) 28.39 kg (62.6 lb)
PowerVault™ MD1220: Weight (maximum configuration) 23.31 kg (51.4 lb)
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5.2 Front View and Features
Figure 2. MD1200 Front View and Features
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Figure 3. MD1220 Front View and Features
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Table 6. MD1200 and MD1220 Front Panel Feature Description
FRONT PANEL / BEZEL INDICATOR AND FETAURE DESCRIPTION
Item Indicator, Button, or
Connector
Icon Description
1 Enclosure status LED The enclosure status LED lights when the enclosure power is
on.
Lights blue during normal operation and when the host server is
identifying the enclosure.
Blinks blue when a host server is identifying the enclosure or
when the system identification button is pressed.
Lights amber when the enclosure is turned on or is reset.
Blinks amber when the enclosure is in the fault state.
2 Power LED The power LED lights when at least one power supply is
supplying power to the enclosure.
3 Split Mode LED The split mode LED lights when the enclosure is in a split-mode
configuration. If the LED is not lit, it indicates that the enclosure
is in a unified-mode configuration.
4 System Identification Button The system identification button on the front control panel can be
used to locate a particular enclosure within a rack. When the
button is pushed, the system status indicators on the control
panel and the EMM blinks blue until the button is pushed again.
5
Hard Drives PowerVault™ MD1200—Up to 12 SAS hot-swappable drives.
PowerVault™ MD1220—Up to 24 2.5-inchSAS hot-swappable
drives.
6
Enclosure Mode Switch When set in the top position, the enclosure is configured in
unified mode. When set in the bottom position, the enclosure is
configured in split mode.
Figure 4. MD1200 and MD1220 Front Bezel Feature and Indicators
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** Available in Q3 2010 12
5.3 Back View and Features
Figure 5. MD1200 / MD1220 Back View and Features
Table 7. MD1200 and MD1220 Back Panel Feature Description
BACK PANEL INDICATOR AND FETAURE DESCRIPTION
Item Indicator, Button, or Connector Icon Description
1 Power supply/cooling fan module PS 1 600 W power supply
For more information, see "Power Indicator codes”
section
2 Primary enclosure management module
(EMM)
EMM 0 The EMM provides:
A data path between the enclosure and the host
server. Enclosure management functions for your
enclosure
3 Secondary EMM EMM 1
4 Power switches (2) The power switch controls the power supply output
to the enclosure
5
Power supply/cooling fan module PS 2 600 W power supply
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5.4 Hard Drive Indicators
Figure 6. Hard Drive Indicators (includes HDD and SSD)
Table 8. Drive Indicator Description
Drive-Status Indicator Pattern
(RAID Only)
Condition
Blinks green two times per second Identify drive/preparing for removal
Off Drive ready for insertion or removal
NOTE: The drive status indicator remains off until all hard drives are
initialized after system power is turned on. Drives are not ready for
insertion or removal during this time. The Dell™ PowerEdge™™
RAID controller PERC H800 may take up to a minute to discover
and initialize all the hard drives.
Blinks green, amber, and off Drive predicted failure
Blinks amber four times per second Drive failed
Blinks green slowly Drive rebuilding
Steady green Drive online
Blinks green three seconds, amber
three seconds, and off six seconds.
Rebuild aborted
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5.5 Enclosure Management Module
Each EMM provides the following data path and enclosure management functions for the
enclosure:
• Monitoring and controlling enclosure environment elements such as temperature, fan,
power supplies, and enclosure LEDs.
• Controlling access to hard drives.
• Communicating enclosure attributes and states to the host server.
Figure 7. Enclosure Management Module
Table 9. EMM Indicator Description
EMM INDICATOR AND FETAURE DESCRIPTION
Item Indicator, Button, or
Connector
Icon Description
1 System Status Indicator Blinks blue when the system identification button is pushed. You
can identify a particular enclosure in a rack using the system
identification indicator.
2 Debug Port For engineering use only.
3 SAS Port (In) IN Provides SAS connections for cabling the host or an up-chain
expansion enclosure (unified mode only).
4 In port link status Lights green when all the links to the port are connected.
Lights amber when one or more links to the port are not
connected.
The LED remains off if enclosure is not connected.
5
SAS Port (Out) OUT Provides SAS connections for cabling to the next down chain
expansion enclosure in a daisy chain (unified mode only).
NOTE: The SAS port Out is disabled if the enclosure is running
in a split-mode configuration.
6
Out port link status Lights green when all the links out of the port are connected.
Lights amber when one or more links out of the port are not
connected.
The LED remains off if enclosure is not connected.
7
EMM Status LED Lights green when the EMM is functioning properly.
Lights amber when the enclosure does not boot or is not
properly configured.
Blinks green (On 250 ms* Off 250 ms) when a firmware
download is in progress.
Blinks green (On 1000 ms+ Off 1000 ms) when a peer auto-
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EMM INDICATOR AND FETAURE DESCRIPTION
Item Indicator, Button, or
Connector
Icon Description
update is in progress.
Blinks amber (On 250 ms Off 250 ms [two times]; Off 1000 ms)
when the enclosure is unable to communicate with enclosure
devices.
Blinks amber (On 250 ms *Off 250 ms [four times]; Off 1000 ms)
when a
firmware update fails.
Blinks amber (On 250 ms Off 250 ms [five times]; Off 1000 ms)
when the firmware versions are different between two EMMs in
an enclosure.
*indicates that the LED blinks fast.
+indicates that the LED blinks slowly.
If two EMMs are installed, a certain degree of failover is offered. Control and monitoring of the
enclosure elements can be transferred from one EMM to another in the event of an EMM failure. A
failover occurs whenever communication is lost between an EMM and its peer. In the event of a peer
EMM failure, the surviving EMM activates the amber status LED of the failed EMM. The surviving EMM
then takes over the responsibility of enclosure management, which includes monitoring and control of
the audible alarm, enclosure LEDs, power supplies, and fans. When a failed EMM is replaced,
enclosure management functions do not automatically return to the replaced EMM unless an additional
failure occurs that triggers another failover event.
Enclosure Failover When Two EMMs are Installed
Note: When the enclosure is configured with dual EMMs in a redundant path configuration, all drives
are still accessible, even after an EMM failure, since the EMMs are joined mode via the PERC H800
redundant path. When the enclosure is configured in split mode, only half of the drives are accessible
in the event of an EMM failure.
If critical internal temperatures are reached, the enclosure shuts down automatically through either a
thermal shutdown command issued by the EMM firmware or through a command from Dell™™
OpenManage™ Server Administrator (OMSA).
EMM Thermal Shutdown
An audible alarm is activated if any of the fault conditions listed below occur. The alarm sounds
continuously if:
Enclosure Alarms
• More than one fan has failed or a power supply/cooling fan module is not installed.
• One or more temperature sensors are in critical range.
The alarm sounds every 10 seconds if:
• One power supply has failed.
• One cooling fan has failed.
• One or more temperature sensors are in warning range.
• One EMM has failed.
NOTE: The alarm is disabled by default. To enable the alarm, change the default setting in OMSA. For
more information, see the OMSA documentation.
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5.6 Power Indicator Codes
Figure 8. Power Indicator Codes
Table 10. Power Indicator Description
POWER INDICATOR AND FETAURE DESCRIPTION
Item Indicator, Button, or
Connector
Icon Description
1 DC Power The LED lights green when the DC output voltage is within the
limit.
If this LED is off, it indicates that the DC output voltages are not
within the limit.
2 Power supply/cooling fan
fault
The LED lights amber when the DC output voltage is not within
the limit or a fault with the fan is detected. If this LED is off, it
indicates that no fault condition is present.
3 AC Power The LED lights green when the AC input voltage is within the
limit.
If this LED is off, it indicates either there is no power or the AC
input voltage is not within the limit.
5.7 Solution Configurations
The PowerVault™ MD1200 and MD1220 enclosures can be cabled in either a unified-mode
configuration or in a split-mode configuration.
• In a unified-mode configuration the enclosure is connected to one host, for example, a server with a
controller card. The enclosure can be one of up to four enclosures daisy-chained to a single port on the
controller card in the host server. The enclosure can also be connected in a redundant path mode with
two connections to single host server. Redundant path is recommended since it provides cable
redundancy and better performance with automatic I/O load balancing. See Figure 9 and
Figure 10 for cabling diagrams of unified mode configurations.
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** Available in Q3 2010 17
• In a split-mode configuration the enclosure is connected to either two host controllers or two ports on
a single host controller. The enclosure can be connected to two different host servers in a split mode
configuration. Each server sees the enclosure as an independent device with half of the total enclosure
slot capacity. Table 10 lists the drives that are controlled by each enclosure management module
(EMM) in a split-mode configuration. See Figure 11 for a cabling diagram of a split-mode configuration.
The operating mode is selected using the enclosure mode switch on the front panel of the enclosure.
NOTE: The enclosure mode switch must be set to either unified mode or split mode before the
enclosure is turned on. Changing the configuration mode after turning on the enclosure has no effect on
the enclosure configuration until the enclosure is rebooted.
NOTE: Clustering is not supported on PowerVault™ MD1200 and PowerVault™ M1220 enclosures.
Figure 9. EMM Cabling Diagram in Unified Mode (Single Path)
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Figure 10. EMM Cabling Diagram in Unified Mode (Redundant Path) - RECOMMENDED
Figure 11. EMM Cabling Diagram in Split Mode
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Table 11. Split Mode Configuration
Enclosure EMM0 EMM1
Dell™ PowerVault™ MD1200 Drives 6 to 11 Drives 0 to 5
Dell™ PowerVault™ MD1220 Drives 12 to 23 Drives 0 to 11
5.8 Connecting the Enclosure
Dell™ PowerVault™ MD1200 and MD1200 enclosures standardize on the 6Gb/s (SAS 2.0) Mini-SAS
cable (SFF 8088). The Mini-SAS cable is unique from the SAS cable used with the previous generation
Dell™ PowerVault™ MD1000 and MD1120 enclosures. See transition comparison in Figure 12.
Figure 12. Mini-SAS Cable Transition
• Connectors on both ends of the SAS cable are universally keyed. Either end of the cable can
be connected to the EMM or the RAID controller.
• To remove the SAS cable, pull the pull-tab to release the cable from the connector on the EMM
and the host system. See Figure 13.
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Figure 13. Connecting a Mini-SAS Cable
5.9 Field Replaceable Units (FRU)
Hot swap HDD and SSD, Power Supply Units (power supply/cooling fan modules), Enclosure
Management Modules (EMMs), Control Panel and Backplane are the primary field replaceable units on
the Dell™ PowerVault™ MD1200 and MD1220.
NOTE: For additional detailed instructions on installing and removing enclosure components, refer to
the PowerVault™ MD1200 and MD1220 Hardware Owner’s manual and Getting Started Guide at
support.dell.com under manuals.
6 Environmental
6.1 Power Supply Specifications
The PowerVault™ MD1200 and MD1220 power supply is rated at 600 W. It operates on input voltages
ranging from 100 – 240 V, auto-switching to the sensed line level.
• EMC classification is Light Industry
• FCC classification is Class A
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Table 12. Power Supply Specifications
AC Characteristics
INPUT PARAMETER Requirement
Input Voltage Range 90 – 264 VAC
Input Frequency 47 – 63 Hz
Peak Inrush Current 55 A for 10ms or less, 25 A for 10-
150ms
Power Factor over full AC input range 0.9 @ output load > 90%
Minimum Efficiency measured 20%, 50%
and 80% output load over full range of AC
input and environmental conditions
Must Meet Climate Savers requirements:
Load Condition
20% 87%
Efficiency
50% 90%
100% 87%
Peak Output Power 600 Watts
6.1.1 Thermal management
The cooling system for the enclosure is designed to allow all components (power supplies,
EMMs, HDDs, SSDs etc.) to meet their full operating specifications. There may be up to four
fans in each power supply/fan module. This configuration provides N+1 fan redundancy,
meaning that the enclosure can be sufficiently cooled for normal operation even if one fan fails.
Firmware shall continuously monitor the temperature sensors within the enclosure and take
proper actions to throttle the fans in order to maintain optimal operating temperature.
6.1.2 Over-Temperature Shutdown
In order to prevent potential damage to the drives and subsequent loss of data, the power
supply has the capability to shut itself down or be shut down by the EMM, through embedded
firmware or host management software such as Dell™ Open Manage Storage Management, in
the event of an over-temperature condition. When the power supply incorporates its internal
thermal shutdown feature, it will automatically restart when the over temperature condition no
longer exists. Hysteresis of at least 5 degrees is employed to prevent a frequent toggling on
and off of the outputs.
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6.2 Environmental Specifications
Table 13. Environmental Specifications
Temperature
Operating 10° to 35°C (50° to 95°F) with a maximum temperature gradation
of 10°C per hour
Note: For altitudes above 2950 feet, the maximum operating
temperature is de-rated 1°F/550 ft.
Storage -40° to 65°C (-40° to 149°F) with a maximum temperature
gradation of 20°C per hour
Relative Humidity
Operating 20% to 80% (non-condensing) with a maximum humidity
gradation of 10% per hour
Storage 5% to 95% (non-condensing) with a maximum humidity gradation
of 10% per hour
Maximum Vibration
Operating 0.25 G at 3 – 200 Hz for 15 min
Storage 0.5 at 3 – 200 Hz for 15 min
Maximum Shock
Operating One shock pulse in the positive z axis (one pulse on each side of
the system) of 31 G for 2.6 ms in the operational orientation
Storage Six consecutively executed shock pulses in the positive and
negative x, y, and z axes (one pulse on each side of the system)
of 71 G for up to 2 ms
Altitude
Operating -16 to 3048 m (-50 to 10,000 ft)
Note: For altitudes above 2950 feet, the maximum operating
temperature is de-rated 1°F/550 ft.
Storage -16 to 10,600 m (-50 to 35,000 ft)
Airborne Contaminant Level
Class G2 or lower as defined by ISA-S71.04-1985
7 Rack Information
7.1 Overview
The chassis dimensions shall adhere to CEA‐310‐E and Server System Infrastructure (SSI)
specifications. Dimensional constraints of the chassis require that the chassis be 2U in height, and
comply in width to fit a Dell™ rack. Drives are accessible from the front, while power supply/fan
modules, backplane, and EMMs are accessible from the rear.
7.2 Rack Rail Kit
Provisions for a rack rail kit are incorporated into the chassis design. The chassis, front panel, and rack
kit, when fully assembled together and placed in a rack, must be in compliance with DELL™ Rack
Design Guidelines Version 1.1. All critical envelope dimensions referenced in this document assume
the inclusion of the rack kit and bezel. Both VersaRail and RapidRail kits are available.
Page: 22
** Available in Q3 2010 23
8 Additional Information
• Non-Dell drive lock-out – In order to ensure the highest quality products and best customer
experience, the PERC H800 will not allow for non-Dell™ SAS HDDs or SSDs to be initialized or
configured in a Dell™ PowerVault™ MD1200 or MD1220.
• Backward Compatibility (MD1200) - The PowerVault™ MD1200 does not provide backward
compatible support for connecting to previous generation adapters (PERC 5/E or PERC 6/E) or
daisy-chaining with previous generation enclosures (MD1000, MD1120, MD3000, MD3000i).
MD1200 does support a drive carrier that is common with the Dell™ 11th
Generation PowerEdge™
servers. The previous generation PowerVault™ MD1000 carrier is not compatible with the
MD1200.
• Backward Compatibility (MD1220) - The PowerVault™ MD1220 does not provide backward
compatible support for connecting to previous generation adapters (PERC 5/E or PERC 6/E) or
daisy-chaining with previous generation enclosures (MD1000, MD1120, MD3000, MD3000i). The
MD1220 supports a drive carrier that is common with the Dell™ 11th
Generation PowerEdge™
servers and the previous generation PowerVault™ MD1120.
• Enclosure Migration and Drive Format – The PowerVault™ MD1200 and MD1220 will not be
supported behind Dell’s 3Gb/s PowerVault™ External RAID enclosures, MD3000 and MD3000i.
• Audible alarm – The PowerVault™ MD1200 and MD1220 support an audible alarm within the
enclosure (must be enabled via OMSS / PERC H800).
• EMM blank – An EMM blank must be installed in EMM1 position if a second EMM is not installed.
This is required for proper airflow. In order to remove the EMM blank; you will need to remove
EMM0 to access a release latch (see Figure 14) for blank. This ensures the customer shuts down
the enclosure before making any configuration changes that could but data at risk.
Figure 14. Latch

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