Re: A5000 and qlogic
- From: Peter Eriksson <peter@xxxxxxxxxx>
- Date: Fri, 2 Feb 2007 13:26:42 +0000 (UTC)
Michael Vilain <vilain@xxxxxxxxxxx> writes:
In article <1170223291.095028.313370@xxxxxxxxxxxxxxxxxxxxxxxxxxx>,
"BL" <c50342182003@xxxxxxxxx> wrote:
Hi,
I have a E250 and A5000 storage but I have no HBA card inside my E250
server. By the way, I have bought a qlogic 2100f from ebay. Can I use
it to connect the A5000?
Thanks.
I seem to recall that the SUN A5000 (aka photon) arrays used their own
SUN-branded interface. It wasn't standard Fibre protocol so you can't use a
Fibre HBA to connect to it.
Some of the SUN SOC/IO+ cards had a compatible fibre port. I tried looking for
documentation on SUN's site, but they now seem to require a SUN Online
account to access
http://sunsolve.sun.com/handbook_private/Systems/A5000/docs.html
Bottom line, no. Only the SUN Fibre cards work with an A5000.
Wrong. It uses perfectly normal standard 1Gbps FC-AL (Arbitrated Loop).
We have four A5000 arrays connected to a Sun Ultra 450 using Qlogic 2100
HBA adapters, and we used to use some other third-party cards on an
Ultra 2 (before that server went belly-up).
But to get things to work smoothly I needed some serious configuration
of the HBA configuration files (mostly limiting the number of tagged
commands issued concurrently).
(The A5000 units are connected to HBA1 via a FC hub)
Relevant parts of my /kernel/drv/qla2100.conf (I use Qlogics own
driver) from that server (running Solaris 10 - the driver doesn't
officially support Solaris 10 but who cares):
# Maximum number of commands queued for each port in the adapter.
# Range: 0 - 65535
hba0-max-iocb-allocation=256;
hba1-max-iocb-allocation=7;
# Maximum number of commands queued on each logical unit.
# Range: 0 - 65535
hba0-execution-throttle=31;
hba1-execution-throttle=7;
# Amount of time to delay after a loop reset for starting any new
# I/O commands.
# Range: 0 - 255 seconds
hba0-reset-delay=10;
hba1-reset-delay=10;
# Was 5
# Number of times to retry a port that is not responding.
# Range: 0 - 255
hba0-port-down-retry-count=5;
hba1-port-down-retry-count=5;
# Was: 30
# During link down conditions enable/disable the reporting of
# errors.
# 0 = disabled, 1 = enable
hba0-link-down-error=0;
hba1-link-down-error=0;
# Was: 1
These settings might not the the *optimal* ones, but atleast the
systems works... (With the default settings, or using Suns own
"qlc" driver) as soon as we would start putting some load on the
disks in the A5000 they would start resetting and going off/on the
FC bus like crazy...
- Peter
--
--
Peter Eriksson <peter@xxxxxxxxxx> Phone: +46 13 28 2786
Computer Systems Manager/BOFH Cell/GSM: +46 705 18 2786
Physics Department, Linköping University Room: Building F, F203
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