Intel BB5000XALR Specification Update - Page 26
Drives may not be detected or may go offline in the Intel® Server System
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Enterprise Platforms and Services Marketing Monthly Specification Update 41. SuSE* Linux Enterprise Server unable to boot after basic installation Problem During SuSE* Linux Enterprise Server installation, if a USB floppy drive is used to load the mass storage driver, SuSE* Linux Enterprise Server might not boot after basic installation. The following message may display: resume device /dev/sdb1 not found (ignoring) waiting for device /dev/sdb2 to appear not found -- exiting to /bin/sh $ Implication During installation, the USB floppy device is recognized as sda, and the mass storage is recognized as sdb. After reboot, the mass storage is now recognized as sda, but SuSE* Linux Enterprise Server still tries to load system files from sdb. To resolve this issue, you must modify the grub menu list file and the fstab file. Status No Fix. Workaround http://www.intel.com/support/motherboards/server/sb/CS-025446.htm describes this issue and its workaround. 42. Drives may not be detected or may go offline in the Intel® Server System SR2500ALBRP when operating at SATA 3GB/s data rate Problem In the Intel® Server System SR2500ALBRP with a passive midplane, hard drives may not maintain stable operation at 3GB/s data rate. The problem is known to exist when using the on-board ESB2 controller with any 3GB/s capable drive. The active midplane is not affected. Implication The drives may not be detected during boot or may go offline during an operating system installation or stress load. Status The erratum is fixed with the new revision of the passive midplane FALPASMP MM# 901687, TA# D43781-003, PBA# E24192-203 that will improve SATA signal margins. Workaround Force hard drives to operate at 1.5GB/s data rate. The SATA data rate change does not have a significant impact on hard drive performance as the data rate of 1.5GB/s is still substantially higher than sustained drive media throughput. The active midplane is not affected. On most drives, the SATA data rate can be forced to 1.5GB/s by installing a jumper on the drive. If jumpering the HDD is not an option, contact your HDD supplier for alternate options. 20
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