EMC Qlogic QLA23xx Guía de instalación descargar pdf (Pagina 112)

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EMC Fibre Channel and iSCSI with QLogic Host Bus Adapters in the Windows Environment

Troubleshooting

Operating system/driver capabilities and limitations

The following capabilities and limitations should be noted for

Windows operating systems with QLogic HBAs.

LUNs

Theoretically, Windows supports up to 261,120 total LUNs. This

figure is based on the listed support limitations for Windows Server

from Microsoft: 8 buses per adapter, 128 targets per bus, and 255

LUNs per target. However, due to registry hive limitations, a

Windows server is most likely to run out of registry space to keep

track of these large LUN counts well before reaching this limit.

Windows 2000 has this registry size issue. See Microsoft

knowledge-base articles 292726 and 269075 for information.

Windows 2003 does not have this issue.

Microsoft Windows limits the number of LUNs per HBA to 255

(LUNs 00-FE) even though the HBAs are capable of presenting 256

(LUNs 00-FF). It is a function of the operating system that prevents

that last LUN from being presented to the user, and not the HBA or

driver. This limitation should be taken into consideration when

planning your host configuration.

Volume Sizes

Windows 2000 supports a maximum file system size of 2 TB

(terabytes.)

Windows 2003 supports a maximum file system size of 2 TB unless

Service Pack 1 is installed. With SP1, the maximum supported

physical disk size is 256 TB.

Note: Volumes larger than 2 TB must use GPT partitions to support them.

Refer to your Windows users guide for information on GPT partitions.

Note: Windows 2003 for x64 servers does not require SP1 to create GPT

partitions.

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EMC Qlogic QLA23xx Guía de instalación Pagina 112