HP 3PAR RedHat and Oracle Linux Implementation Guide

1 TESTLUNS.1 sqa-dl380g5-05 iqn.1994-05.com.redhat:33853dd5ab2e 1:3:1 host
2 TESTLUNS.2 sqa-dl380g5-05 iqn.1994-05.com.redhat:33853dd5ab2e 1:3:1 host
3 TESTLUNS.3 sqa-dl380g5-05 iqn.1994-05.com.redhat:33853dd5ab2e 1:3:1 host
4 TESTLUNS.4 sqa-dl380g5-05 iqn.1994-05.com.redhat:33853dd5ab2e 1:3:1 host
5 TESTLUNS.5 sqa-dl380g5-05 iqn.1994-05.com.redhat:33853dd5ab2e 1:3:1 host
6 TESTLUNS.6 sqa-dl380g5-05 iqn.1994-05.com.redhat:33853dd5ab2e 1:3:1 host
7 TESTLUNS.7 sqa-dl380g5-05 iqn.1994-05.com.redhat:33853dd5ab2e 1:3:1 host
8 TESTLUNS.8 sqa-dl380g5-05 iqn.1994-05.com.redhat:33853dd5ab2e 1:3:1 host
9 TESTLUNS.9 sqa-dl380g5-05 iqn.1994-05.com.redhat:33853dd5ab2e 1:3:1 host
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20 total
VLUN Templates
Lun VVName HostName -Host_WWN/iSCSI_Name- Port Type
0 TESTLUNS.0 sqa-dl380g5-05 ---------------- --- host
1 TESTLUNS.1 sqa-dl380g5-05 ---------------- --- host
2 TESTLUNS.2 sqa-dl380g5-05 ---------------- --- host
3 TESTLUNS.3 sqa-dl380g5-05 ---------------- --- host
4 TESTLUNS.4 sqa-dl380g5-05 ---------------- --- host
5 TESTLUNS.5 sqa-dl380g5-05 ---------------- --- host
6 TESTLUNS.6 sqa-dl380g5-05 ---------------- --- host
7 TESTLUNS.7 sqa-dl380g5-05 ---------------- --- host
8 TESTLUNS.8 sqa-dl380g5-05 ---------------- --- host
9 TESTLUNS.9 sqa-dl380g5-05 ---------------- --- host
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10 total
Restrictions on Volume Size and Number
Follow the guidelines for creating virtual volumes (VVs) and Virtual LUNs (VLUNs) in the HP 3PAR
Command Line Interface Administrator’s Manual while adhering to these cautions and guidelines:
• This configuration supports sparse LUNs (meaning that LUNs may be skipped). LUNs may
also be exported in non-ascending order (e.g. 0, 5, 7, 3).
• The HP 3PAR StoreServ Storage supports the exportation of VLUNs with LUNs in the range
from 0 to 65535.
• The maximum LUN size that can be exported to an RHEL host is 16 TB when the installed
HP 3PAR OS version is 2.3.x or 3.1.x. A LUN size of 16 TB on an RHEL host is dependent
on the installed RHEL version and update since some older versions of RHEL will not support
a volume greater than 2 TB.
Discovering Devices with an Emulex HBA
Use one of the following methods to dynamically add new LUNs:
• Use the echo statement.
• Use the echo scsi add statement.
HP recommends that you use the echo statement method where the scan is performed using the
sys device tree.
Scan Methods for LUN Discovery
You can use the following methods to discover LUNs from the RHEL host.
• Method 1: Uses sysfs scan for scanning multiple devices at once
• Method 2: Uses adding single devices for adding single devices one at a time
Restrictions on Volume Size and Number 105