Eva6400/8400 Operation; Best Practices; Operating Tips And Information; Reserving Adequate Free Space - HP StorageWorks 6400/8400 - Enterprise Virtual Array User Manual

3 EVA6400/8400 operation

Best practices

For useful information on managing and configuring your storage system, see the HP StorageWorks
Enterprise Virtual Array configuration best practices white paper available from
http://h18006.www1.hp.com/storage/arraywhitepapers.html

Operating tips and information

Reserving adequate free space

To ensure efficient storage system operation, a certain amount of unallocated capacity, or free space,
should be reserved in each disk group. The recommended amount of free space is influenced by your
system configuration. For guidance on how much free space to reserve, see the HP StorageWorks
Enterprise Virtual Array configuration best practices white paper. See

Using FATA disk drives

FATA drives are designed for lower duty cycle applications such as near online data replication for
backup. These drives should not be used as a replacement for EVA's high performance, standard
duty cycle, Fibre Channel drives. Doing so could shorten the life of the drive.
For useful information on managing and configuring your storage system, see the HP StorageWorks
Enterprise Virtual Array configuration best practices white paper available from
h18006.www1.hp.com/storage/arraywhitepapers.html.

Maximum LUN size

Table 11 lists the maximum LUN size supported with each supported operating system.
Table 11 Maximum LUN size
Operating system
HP OpenVMS 7.3-2, 8.2, and 8.3 with Alpha servers
HP OpenVMS 8.2-1, 8.3, and 8.3-1H1 with Integrity
servers
HP-UX 11.11
HP-UX 11.23
HP-UX 11.31
HP StorageWorks 6400/8400 Enterprise Virtual Array user guide
Best

Maximum LUN size

1 TB
1 TB
2 TB
2 TB
16 ZB
practices.
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