Re: 3ware escalade vs software raid, from a different jeff

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Thu, 19 Feb 2004, Michael wrote:
>Bear in mind that what you are calling "true hardware raid" is really
>a microprocessor programmed to do the raid algorithims.

3ware has custom designed matrix switch chips to handle each IDE drive.
This *alone* is worth the cost of the card.  The RAID parity calculations
are also done in hardware (not a bunch of CPU xor's.)  You'd be surprised how
much data a small "slow" processor can move when properly programmed.

>These turkeys have micro-code bugs that cause a
>variety of problem for which there is no workaround or solution other
>than trashing the cards.

Exactly what bugs?  I've used a number of hardware SCSI RAID cards (none
by Adaptec however -- some that are now owned by Adapatec) and all of them
work properly -- as long as they aren't physically damaged (I had one with
a bad DIMM)

--Ricky


-
To unsubscribe from this list: send the line "unsubscribe linux-raid" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

[Index of Archives]     [Linux RAID Wiki]     [ATA RAID]     [Linux SCSI Target Infrastructure]     [Linux Block]     [Linux IDE]     [Linux SCSI]     [Linux Hams]     [Device Mapper]     [Device Mapper Cryptographics]     [Kernel]     [Linux Admin]     [Linux Net]     [GFS]     [RPM]     [git]     [Yosemite Forum]


  Powered by Linux