My question is what exactly rule of 17 is. In most forums, this question is answered vaguely just by saying, its EMC's mathod of redundancy.
as we know, All SAN environment are built in rudundant fabric,and storage evices are also attached to the SAN likewise. What is the role of Rule of 17...
If you want to shut enclosures off, that means you are willing to stop IO from the application servers.
The right way to shut enclsures off with out coruppting data will be,
Shut the servers down, or in case of UNIX, unmount the file systems. Then shut the DS4000 controllers off. Finally,shut...
If the slots are empty. please insert one drive at a time, and check if it spins up before you insert the second one, then insert the second one.
Go t oStorage manager and see if the drives are shown.
The Primary path can be seen from Storage manager by clicking on individual LUNs, whether the path to that LUN is prefered (primary) or non-prefered, (Secondary).
Ok, I saw your other note that the hosts are Blade Centers. In that case, your Blade Center uses a Qlogic Intellegent-Pass-Thru switch module on the chassis to internally map the servers HBAs to the switches. The purpose of this module is to virtualise ports and map them to Fabric switches...
If you want to make two Fabrics talk to each other for, lets say, mirroring purposes, you need to have FCIP (Fiber Channel over IP), a protocol that transport FC over IP network. Its a regular IP network but on the switch, you may have to have a gE SFPs to translate the protocols.
First of all, Fabric Switches use Fiber Channel protocol to communicate not IP. IP is only used for out-of-band management. Your Fabric switches use ISL (Inter Switch Link) to physically connecet using E_Port. If you configure it with the right port type, which is E_Port and full rate band...
I am seeing the following erro on an AIX server attached to SVC every day fof the last two months. There is no error on SVC logs regarding disks. I also checked the switch ports error logs, none.
What would be the rason for this?
Servewr name
Date/Time: Sun Mar 15 22:58:09 EDT...
Like Fraxx mentioned, teh Ethernet ports of the silkworm are for managing the switch. They have nothing to do with IO transactions. The Ethernet portsjoin your Ethernet infrastructure like any other node. They don't play any switching or routing role. The Silkworm is a Fiber Channel...
How do you apload a directory to windows FTP server?
I was trying to upgrade Brocade switch Firmware. Every time I try to apply the firmware, it errors out saying locating file failed.
How do you upload the directory such as v5.3.0 to an FTP server first?
If you bought the drive from other vender other than IBM certified vender, the drive lacks IBM signature code on it. Thats when you see "uncertified" message.
Replace the drive with an IBM labeled one. You'll be fine.
I got a "Windows couldn't start because the following file is missing or corrupt: \windows\system32\drivers\isapnp.sys.
I went to Microsoft's site and tried to follow the steps in renaming the isapnp.sys file in Windows XP. When I issued the following command: ren...
follow this link and clik on download tab.
http://www-304.ibm.com/jct01004c/systems/support/supportsite.wss/allproducts?brandind=5000028&taskind=1
Good luck
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