DataDirect Networks S2A9550, User Manual

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Installation
DataDirect Networks S2A 9550 User Guide
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3.
When prompted, type in the new label for the selected unit. The new name is
displayed.
2.3.10 Configuring the Storage Arrays
NOTE : In dual mode, LUNs are “owned” by the S2A9550 unit via which they are created.
Hosts only see the LUNs on the S2A that they are connected to, unless cache coherency is
enabled.
Now that you have determined your array configuration, you need to create and format
the LUNs. You have the option of creating a 32 bit address LUN or a 64 bit address LUN.
In the example below, 2 LUNs (32 bit addressing) are created:
• LUN 0 with 4 LUN segments on Tiers 1 to 8 with capacity of 8192 MB each
• LUN 1 on Tiers 1 and 2 with capacity of 8192 MB
1.
To display the current cache settings, type:
cache
<Enter>
2.
Verify that the amount of cache installed is correct.
3.
Then select a cache segment size for your array. To set the segment size to
128 KBytes, for example, type:
cache size=128
<Enter>
This setting can also be adjusted on-the-fly for specific application tuning (see
Section 3.2.11.2 for more information). The default setting is 128.
4.
Type:
lun
<Enter>
. The Logical Unit Status chart should be empty as no LUN is present
on the array.
5.
To create a new LUN, type:
lun add=0
<Enter>
where 0 (zero) is the LUN number. Valid LUN numbers are 0..127.
If only
lun add
is entered, you are prompted to enter a LUN number.
6.
You are then prompted to enter the parameter values for the LUN. You may press
q
at any time to quit and cancel the command completely. In this example:
- Enter a label for the LUN which may contain up to 12 characters
(the label may be
changed later on using the LUN LABEL command)
.
- Answer affirmatively to create a LUN group (LUN 0):
y
<Enter>
- Enter the number of LUNs you want in the LUN group:
4
<Enter>
- Enter the capacity (in Mbytes) for a single LUN in the LUN group:
8192
<Enter>
- Enter the number of tiers to use:
8
<Enter>
Enter the number of the Unit you wish to rename.
Figure 2-10 Labeling an S2A9550 Unit
Test System[1]: dual label
LABEL=1 for Unit 1, Test System[1]
LABEL=2 for Unit 2, Test System[2]
Unit: 1
Enter a new label for Unit 1, or DEFAULT to return to the default label.
Up to 31 characters are permitted.
Current Unit name: Test System[1]
New Unit name: System[1]
System[1]: