search for: 1883i

Hi, Does anyone have experiences about ARC-1883I SAS controller with CentOS7? I am planning to have RAID1 setup and I am wondering if I should use the controller's RAID functionality which has 2GB cache or should I go with JBOD + Linux software RAID? The disks I am going to use are 6TB Seagate Enterprise ST6000NM0034 7200rpm SAS/12Gbit 128...

> The disks I am going to use are 6TB Seagate Enterprise ST6000NM0034 > 7200rpm SAS/12Gbit 128 MB Sorry to hear that, my experience is the Seagate brand has the shortest MTBF of any disk I have ever used... > If hardware RAID is preferred, the controller's cache could be updated > to 4GB and I wonder how much performance gain this would give me? Lots, especially with slower

> This is why before configuring and installing everything you may want to > attach drives one at a time, and upon boot take a note which physical > drive number the controller has for that drive, and definitely label it so > y9ou will know which drive to pull when drive failure is reported. Sorry Valeri, that only works if you're the only guy in the org. In reality, you cannot

On 2017-01-20, Valeri Galtsev <galtsev at kicp.uchicago.edu> wrote: > > Hm, not certain what process you describe. Most of my controllers are > 3ware and LSI, I just pull failed drive (and I know phailed physical drive > number), put good in its place and rebuild stars right away. I know for sure that LSI's storcli utility supports an identify operation, which (if the

On Sat, January 21, 2017 12:16 am, Keith Keller wrote: > On 2017-01-20, Valeri Galtsev <galtsev at kicp.uchicago.edu> wrote: >> >> Hm, not certain what process you describe. Most of my controllers are >> 3ware and LSI, I just pull failed drive (and I know phailed physical >> drive >> number), put good in its place and rebuild stars right away. > > I

Hi Valeri, Before you pull a drive you should check to make sure that doing so won't kill the whole array. MegaCli can help you prevent a storage disaster and can let you have more insight into your RAID and the status of the virtual disks and the disks than make up each array. MegaCli will let you see the health and status of each drive. Does it have media errors, is it in predictive

On Fri, January 20, 2017 12:59 pm, Joseph L. Casale wrote: >> The disks I am going to use are 6TB Seagate Enterprise ST6000NM0034 >> 7200rpm SAS/12Gbit 128 MB > > Sorry to hear that, my experience is the Seagate brand has the shortest > MTBF > of any disk I have ever used... > >> If hardware RAID is preferred, the controller's cache could be updated >> to

On Fri, January 20, 2017 7:00 pm, Cameron Smith wrote: > Hi Valeri, > > > Before you pull a drive you should check to make sure that doing so > won't kill the whole array. Wow! What did I say to make you treat me as an ultimate idiot!? ;-) All my comments, at least in my own reading, we about things you need to do to make sure when you hot unplug bad drive it is indeed failed

On Fri, January 20, 2017 5:16 pm, Joseph L. Casale wrote: >> This is why before configuring and installing everything you may want to >> attach drives one at a time, and upon boot take a note which physical >> drive number the controller has for that drive, and definitely label it >> so >> y9ou will know which drive to pull when drive failure is reported. > >