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Re: Which SATA RAID controller?

Am Mi, den 24.03.2004 schrieb Craig Sanders um 00:31:

> anyone have any opinions about the adaptec 2400 (ATA) or 2410 (SATA)?
> they have driver support in 2.4.x and 2.6.x kernels - no idea how good, though.

We have a 2410 in our backup-server working flawlessly with a 2.6.4
kernel. AFAIR it did work with 2.4 during the burn-in test but as soon
as we wanted to install the production system it wasn't recognized
anymore until we switched to 2.6. 

>From dmesg:
Red Hat/Adaptec aacraid driver (1.1.2-lk1 Mar 17 2004)
AAC0: kernel 4.1.4 build 9965
AAC0: monitor 4.1.4 build 9965
AAC0: bios 4.1.0 build 5912
AAC0: serial b9c379fafaf001
scsi0 : aacraid
  Vendor: ADAPTEC   Model: AAR-2410SA RAID5  Rev: V1.0
  Type:   Direct-Access                      ANSI SCSI revision: 02
SCSI device sda: 960344832 512-byte hdwr sectors (491697 MB)
sda: Write Protect is off
sda: Mode Sense: 03 00 00 00
SCSI device sda: drive cache: write through
 sda: sda1 sda2 sda3
Attached scsi removable disk sda at scsi0, channel 0, id 0, lun 0

> unlike the 3ware cards (or any other IDE/SATA raid cards i've heard of), they
> do have a large (128MB) write-cache - which is essential for raid-5
> performance.

We have 4 160GB Maxtor drives attached to it, configured as RAID5.
If anyone is interested I can do a quick bonnie++ benchmark, though I
don't know if our card has 64MB or 128MB.

best regards,
Markus Oswald <moswald@iirc.at>  \ Unix and Network Administration
Graz, AUSTRIA                     \ High Availability / Cluster
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