HP XP20000XP24000 Disk Array - Manual (Page 12)

Whether hosts can access a volume larger than 2 TB depends on the operating systems of the hosts.
Hosts running the following operating systems can access LUSE volumes larger than 2 TB:
• AIX 5.2 TL08 or later
• AIX 5.3 TL04 or later
• Windows Server 2003 SP1 or later
• Red Hat Enterprise Linux AS 4 Update 1 or later
Cautions :
• Other operating systems do not support LUs larger than 2 TB. If other operating systems are used
by hosts, make sure that the LUs are not larger than 2 TB.
• For information about the maximum LU capacity supported by your operating system, contact the
vendor of your operating system.
LUSE Guidelines
Table 2 on page 12 lists the specifications and restrictions for LDEVs used to configure a LUSE volume.
Table 3 on page 13 lists the specifications and restrictions for LDEVs released from a LUSE volume.
Table 2 Specifications and Restrictions on LDEVs Used to Configure a LUSE Volume
No. Specifications and Restrictions
1 Open volumes (OPEN-3, OPEN-8, OPEN-9, OPEN-E, OPEN-L, and OPEN-V) are supported.
2
The number of LDEVs combined into a LUSE volume must be within the range of 2 to 36 (see
Note 1 ).
3 The emulation type of the LDEVs combined into a LUSE volume must be the same.
4
The RAID level of the LDEVs that are to be combined into LUSE volumes should be the same
(recommended) (see Note 2 ).
5
LDEVs or LUSE volumes that are to be combined must not have assigned path definitions.
For this reason, TrueCopy for Mainframe, HP StorageWorks XP Continuous Access Software,
ShadowImage for Mainframe, HP StorageWorks XP Business Copy Software, and HP
StorageWorks XP Continuous Access Journal Software pair volumes cannot be targets of LUSE
operations (see “ LUSE Operations Using a Path-defined LDEV ” on page 13).
6
LDEVs that are to be combined into LUSE volumes must not be reserved for HP StorageWorks XP
Auto LUN Software.
7
When you combine a LUSE volume with another LUSE volume, the range of LDEVs should not
overlap (see Note 3 ).
8 The maximum capacity of a LUSE volume is 60 TB (see Note 4 ).
9 Combining command devices into a LUSE volume is not supported.
10 The access attribute must be set to Read/Write.
11 Combining internal volumes, external volumes, and virtual volumes (V-VOLs) is not supported.
12 While online, the host mode must not be 0x0C [Windows] or 0x01 [VMWare].
13 The cache mode settings for LDEVs combined into a LUSE volume must be the same.
14 All LDEVs combined into a LUSE volume must be of the same drive type (however, SATA drives
and BD drives can be intermixed).
15 LDEVs are not pool volumes (pool-VOLs).
16 LDEVs are not journal volumes.
17 LDEVs are not system volumes.
12 About LUSE Operations