EMC QLA23xx, QLA22xx manual Boot Time and LUN Availability

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Configuring an EMC Boot Device

Boot Time and LUN Availability

Boot time is the amount of time a storage system requires to boot. This time is a function of the number and types of LUNs in the storage system, and is typically less than five minutes.

If you power up a server and storage system at the same time (cold start), the server’s extended BIOS might scan the Fibre Channel bus before the storage system is ready to respond. If this occurs, the server will not be able to find the boot LUN or Windows operating system. To avoid this problem, either power up the storage system and fabric before the server, or if the server is so equipped, set it to delay the scan until the storage system is ready.

3-32 EMC Fibre Channel with QLogic HBAs in Windows Hosts