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document How to configure the switch for different bonding modes
  The active-backup, balance-tlb and balance-alb modes do not require any specific configuration of the switch. The 802.3ad mode requires that the switch have the appropriate ports configured as an 802.3ad aggregation. The precise method used to configure this varies from switch to...
rating 28 Mar, 2013 Views: 4834
document How do I set my VMalloc size?
The default size for VMalloc is 128. Your other choices are 256 and 384. We usually recommend setting the size to 384.  Most system will benefit from this choice. However, you may want to step it up in increments and test first. Go to the Console Tools: Ctl-Alt-W Select Tuning...
Not rated 03 Nov, 2008 Views: 4200
document Modify Ethernet Card driver
Normal 0 false false false EN-US X-NONE X-NONE MicrosoftIn ternetExplorer4 ...
Not rated 18 Feb, 2009 Views: 3935
document Jumbo Frames
Symptom:  When trying to set  the MTU value of 9000, it claims it's a wrong value. Problem: Trying to enable jumbo frames on an Intel82573V Ethernet controller from the console CTRL-ALT-W Tuning Options Jumbo Frames Config Solution: you may want to try a smaller value. It looks...
rating 18 Feb, 2009 Views: 8453
document File system repair
File system errors can be caused by power outages and disconnects that prevent the file system from completely writing the data to the RAID array. It can also be caused by problems with hardware, system crashes and drivers. This will result in file system being left in an inconsistent state....
rating 04 Jun, 2013 Views: 12398
document I have a low NFS performance in VMware environment.
Problem: A customer report that the NFS performance result for NFS 16K Writes are - 11 MB/sec.  Symptom: The tests on the DSS Demo (Atlanta) and IOMeter, while doing 16K Reads and with the parameters as specified in the attached "Comparison of Storage Protocol Performance" from VMware,...
rating 30 Apr, 2009 Views: 12183
document How many CPU cores and RAM recommended?
Problem: I'm not sure how many Gigs and CPU cores I need to have in my system. Any recommendation? Solutio n: With using more CPU's with Cores and Cache only improves the IOPS in NAS for read and writes also for many users connected to the NAS head. If there are 250+ users...
rating 25 Jun, 2013 Views: 7272
document System performance, and RAID BIOS settings.
The most probable reason for very bad system performance is the RAID controller's cache being disabled! In most cases there is no need for any investigation. The first thing to check is if the RAID Cache is ON, and enable it if it is not. Some RAID controllers without a BATTERY...
rating 26 Apr, 2013 Views: 6670
document How-to dramatically improve IO performance?
How to measure the IO Performance using IOmeter There are plenty of benchmarking tools available but storage professionals mostly use IOmeter. Unfortunately IOmeter is a little tricky to use. You really need to read the user manual first. I have frequently seen users trying...
rating 13 Jul, 2011 Views: 10132
document Performance Testing with DSS V6 for your NIC's and Volumes
RAID Array and NIC speed tests to be used with the DSS V6. Only one small update can be applied, this means that if you are testing with the RAID Array test and would like to test the NIC's then you will need to remove the small update for the RAID Array test in the same location as...
Not rated 13 Jul, 2011 Views: 4330
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