ES20 / ES30 Shelf Capacity !

Shelve Capacity

· Expansion shelf Specs:

ES20 & ES30 Back Panel#


· Shelf Capacity #
Allows ES3O and ES2O (purchased for use with DD OS 5.1) external shelves to be added to the Data Domain system for additional capacity.

· Note that EMC ES3O shelves have one spare disk. ES2O shelves have two spare disks. The rest of the disks

should report that they are available or spare disks.

· A shelf set must consist of either all ES20s or all ES30 shelves. These two models cannot be mixed in the same shelf set.

· DD660 and DD690 support only two sets, so if both ES20s and ES30s are used, there is one set of each.

· Data Domain systems that support the ES30 shelves must be running DD OS 5.1 and later.

· Note: Cables for the ES20 are different than those for the ES30.

ES20: Cables and Connectors

Mini-SAS Cable for ES2O to ES2O Connections:

Mini-SAS Cable for SAS HBA to ES2O Connections:

H D-mini-SAS Cable for SAS O Module to ES2O Connections:

ES20: Cables and Connectors#

Mini-SAS Cable for SAS HBA to ES3O and E530 to E530 Connections:

· To verify the SAS State LED connection Status simply look at the back panel of the ES2O or ES3O and the LED state#

· White indicates the expansion shelf is off.

· Flashing green indicates that the expansion shelf and the DD appliance are establishing a connection.

· Solid green indicates the connection has been established.

· Amber indicates a connectivity problem.

· Disk Enclosure Power: Blue #

Power to enclosure is on.

· Disk Enclosure Fault: Amber#

On when any fault condition exists; if the fault is not obvious from a disk module light, look at the back of the disk enclosure.

· Disk Active: Green#

-No LED when the slot is empty or has a filler module. Also, off when the disk is powered down by command; for example, the result of a temperature fault.

-Fast blinking when the SATA/SAS drive is powered up but not spinning; this is a normal part of the spin-up sequence, occurring during the spin-up delays of a slot.

-On when the drive has power but is not handing any I/O activity (the ready state.

-Slow blinking when the drive is spinning and handling I/O activity.

· Disk Fault: Amber#

On when the disk module is faulty, or as an indication to replace the drive.

ES30 Shelf sets#

shelf 1 is the bottom shelf of a set and shelf 3 is the top shelf in a set of three. Install filler panels in unused rack openings.

Verifying Shelf Installation:

The Data Domain system recognizes all data storage (system and attached shelves) as part of a single volume.


1. After installing the new shelves, check the status of the SAS HBA cards by entering:

# disk port show summary

The output shows the port for each SAS connection, such as 3a and 4a, and the online status, which is offline. After the shelves have been connected, the same command also displays the connected enclosure IDs for each port, such as 2 and 3. The status changes to online.

2. Verify that the Data Domain system recognizes each attached enclosure/shelf by


# enclosure show summary

This command shows each recognized enclosure ID, Data Domain system model

number, serial number, and slot capacity. For example:

Add enclosure disks to the volume:


1. Enter:

# storage add enclosure enclosure-id
where enclosure-id is always 2 for the first added shelf and 3 for the second.
Note# The Data Domain system always has the enclosure-id of 1 (one).

2. Because the disks cannot be removed from the file system without re-installing the DD OS after they have been added, you are asked to confirm. Type y.

3. When prompted, enter your sysadmin password.

4. (Optional) Add disks in another enclosure at this time by entering:

# storage add enclosure enclosure-id

5. Display the RAID groups for each shelf by entering:

# storage show all

For the ES30, one disk in a shelf is a spare disk. The rest should report that they are


6. To allow the file system to use these enclosure disks, enter:

# filesys expand

-ES3O shelves have one spare disk.
-ES2O shelves have two spare disks.
The remaining of the disks should show they are available or spare disks.

Disks labeled unknown (not spare),type#disk unfail
for each unknown disk like above example.


About Ahmad Sabry ElGendi
This entry was posted in Data Domain, E20-385, EMC. Bookmark the permalink.

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