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How to rescan Fiber Channel and SCSI storage
You can force a rescan for SCSI drives like this: echo “- – -” >/sys/class/scsi_host/host Same for FiberChannel: echo “1″ >/sys/class/fc_host/host Also, you can reboot the system to Rescan.
HBA card troubleshooting
HBA card troubleshooting HBA card is configuration is very important and if you can’t configure HBA card, then system won’t see your storage and you will have big issues. Make…
How to diffierenate from Local disks vs SAN
How to differentiate from Local disks vs SAN Some times system admins get confused that disks are from SAN or local disk. Please check the following information and this server…
How to manage iSCSI volumes and devices on Linux
How to manage iSCSI volumes on Linux iSCSI is a good choice for small companies who don’t have big budget fiber channel storage solution. Basically SCSI commands signal go through…
Solaris Fiber channel troubleshooting
There are several issues you may face during the fiber channel card installation. After you have inserted the FC card and if you don’t see it, then you may need…
External Disk Frame Migration on the Solaris
Environment There were two servers. Three Oracle resource groups were defined in Veritas Cluster, and each server had an Emulex Fibre Channel (FC) card with dual paths to the Storage…
Storage Planning on EMC NS20 storage and IOPS calculation
Storage Planning on NS20/IOPS calculation Flexibility/Scalability NS20 supports metalun, so we can use different raid groups. The NS20 has virtual LUN migration so you can move a LUN live to…