Internal controllers for md-raid

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

 



Hi all,
excuse me if I resurrect this topic again.

We need to buy some controllers for internal RAID (=same chassis as the mainboard) with lots of ports: at least 16.

Would be for MD RAID use (no HW raid).

We have WD RE3 SATA drives, so SAS is not necessary. BTW the differences between SATA and SAS are not yet that clear to me especially for internal arrays i.e. no expanders.

The driver should be in the mainstream kernel otherwise upgrading or using a new kernel is a pain. This seems to exclude all new LSI controllers, which have been suggested on this linux-raid ML: by grepping the 2.6.33 sources it seems I can't find drivers for LSI 84016E 16internal ports, nor for the LSI SAS 9200-8e which was suggested in this ML.

@ people using LSI SAS cards: how can you use the latest kernel? Latest driver I see at the website is for RHEL5 and SLES10 so would be 2.6.16. You are forced to use such an old kernel?

We also need hot-swap, or "warm" swap whatever... I mean it's OK to type commands at the console but we mustn't need to reboot the machine to see new drives.

Looking around I have found the following controllers:

   Areca ARC-1680ix-24 - (24int + 4 ext) - $1130
   Areca ARC-1300ix-16  (16int + 4ext) - $330
   Areca ARC-1280ML (24int) - (probably surpassed by the 1680ix) - $1100
   Adaptec 51645 - (16int + 4ext) - $800
   Intel SRCSASPH16I  (16int) - $630
   3ware 9650SE  -16ML or -24M8: $850 or $1000

3wares 9650SE we already have them: they are stable but it seems to me that they are slow, especially for random I/O.

The Areca ARC-1300ix-16 is very cheap but I read of big troubles with that card or the using the same Marvell chipset. I think there is a discussion still going in linux-scsi. I'll try to follow there.

For the Intel SRCSASPH16I card I don't see the driver mentioned explicitly in the kernel sources. The card uses two LSI SAS1068 controllers for which I do see the driver in the kernel souces but I don't know if this is enough to support the Intel card at least as an HBA (no HW RAID). Linux-scsi people do you know?

Regarding the Areca Adaptec cards (except the 1300ix), anybody having any experience with these brands can comment on stability and speed on linux MD raid?

Thanks for your suggestions
Asdo
--
To unsubscribe from this list: send the line "unsubscribe linux-scsi" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [SCSI Target Devel]     [Linux SCSI Target Infrastructure]     [Kernel Newbies]     [IDE]     [Security]     [Git]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Linux ATA RAID]     [Linux IIO]     [Samba]     [Device Mapper]
  Powered by Linux