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Aug
27
awarded  Nice Question
Jun
17
awarded  Popular Question
Mar
12
awarded  Yearling
Mar
12
accepted Is it possible to write into RAID chunk multiple times?
Mar
12
comment Is it possible to write into RAID chunk multiple times?
Thanks for this clarification!
Mar
11
comment Linux software-RAID4/RAID5 and CPU usage
@TomTom if you write a 1GB file at 0.5GB/s, then you have to perform 4G XOR operations in a second. However, I fully understand your point and SSD's in RAID5 is indeed an extreme example.
Mar
11
comment Linux software-RAID4/RAID5 and CPU usage
@HopelessN00b I see. But for example in case of SSD's, which support sequential write speeds >500MB/s, this would mean 4000000000 XOR calculations per second. Even for multi-core processors, this seems to be considerable load, isn't it?
Mar
11
asked Linux software-RAID4/RAID5 and CPU usage
Mar
11
comment Is it possible to write into RAID chunk multiple times?
In my first statement I indeed meant that if a new write operation occurs(e.g. new file is written to disk), then new cluster is required. And I meant traditional file systems like ext3 and ext4. I added a drawing to clarify my question.
Mar
11
revised Is it possible to write into RAID chunk multiple times?
added drawing
Mar
10
asked Is it possible to write into RAID chunk multiple times?
Mar
10
accepted What IP addresses to use for monitor the availability of Internet connection?
Mar
10
comment What IP addresses to use for monitor the availability of Internet connection?
@pepoluan thanks!
Mar
10
comment What IP addresses to use for monitor the availability of Internet connection?
best practice for automated failover is probably to use ISP upstream router AND tier-1 ISP DNS server AND Google DNS server? In other words, failover connection to another provider only if all three are not reachable at the same time?
Mar
10
asked What IP addresses to use for monitor the availability of Internet connection?
Mar
7
revised calculating optimal chunk size for Linux software-RAID
fixed typo Kib -> KiB
Mar
6
asked calculating optimal chunk size for Linux software-RAID
Feb
1
asked Format of mail-server PTR record in order it to be valid for spam filters?
Jan
30
accepted How to migrate servers from one publicly-routable address space to another without downtime?
Jan
30
asked How to migrate servers from one publicly-routable address space to another without downtime?