Thanks to a lot of people who responded: Adam, Skottie, Blake. In regards to 4 FC on board FC cards if I have a 3050 cluter system: don't I use all 4 for disk shelves connectivity: 2 locally, 2 partner? does it not leave me without tape/san ports? Thanks
On 7/14/06, Skottie Miller skottie@anim.dreamworks.com wrote:
Linux Admin wrote:
Skottie, Thanks for fast response. So that I understand correctly 4 copper gigE on board: data service only! (management is separate?)
data or management.
There is also a serial port console you can hook (we use cyclades terminal servers) and a RLM remote management port that uses a LAN (we have a physicially seperate management LAN). the RLM is very cool, you can do remote power on/off, lots of out-of-band control and console redirection.
4 SFP based 2G fiberchannel on-board: 2 have to sacrificed for disk shelf's? and 2 can be used for tape san?
if you have a cluster, you need a minimum of two disk FC ports. one for the primary, and one for the failover partner.
Depending on performance needs and the number of shelves, you may want to use more FC for disk shelves.
If you need more ports, install some x2050 FC adapters in the PCI cage for the disks, and use the on-board for the initiator ports.
also, depending on the speed of your tape drives, and how many, one should be plenty to feed tape devices for backup.
-skottie
On 7/14/06, *Skottie Miller* <skottie@anim.dreamworks.com mailto:skottie@anim.dreamworks.com> wrote:
4 copper gigE on board. 4 SFP based 2G fiberchannel on-board, so they can be copper or fiber. lots of empty PCI slots for other expansion cards. the FC ports can connect to disk or tape be used as target adapters if you serve FCP, they a san. the on-board FC ports are faster; NetApp recommends that (if you serve SAN) that you use the on-board ports for that, and use some x2050 2-port FC adapters to connect the disk shelves. -skottie Linux Admin wrote: > Can someone please explain to me the break down of on board cards in 3050 > according to the specs there are 4 gigE on board ports: are they copper > or fiber? > can all of them be used for data? > What about FC ports? The 2 bellow, are they used for disk shelf > connectivity or they can be used for san/tape connections? > > > *Onboard 2Gb Fibre Channel Ports* (configurable as
Storage-attached
> initiator or Host-attached target) > > > 4 > > -- Scott Miller skottie@anim.DreamWorks.com <mailto:skottie@anim.DreamWorks.com>
--
Scott Miller skottie@anim.DreamWorks.com
Linux Admin wrote:
Thanks to a lot of people who responded: Adam, Skottie, Blake. In regards to 4 FC on board FC cards if I have a 3050 cluter system: don't I use all 4 for disk shelves connectivity: 2 locally, 2 partner? does it not leave me without tape/san ports?
depends on how many shelves, and the disk performance you need/expect.
I use as few loops / fc ports as possible for partner disks, since (by definition) failover performance may be degraded.
If you require failover performance to not degrade, then you need to be sure to never run either head > 50%, and provide sufficient FC bandwidth to the disk shelves to match your workload when failed over.
Since we rarely operate failed over for very long, I'd rather use the fc ports for the primary disk shelves.
-skottie