Thread (4 messages) 4 messages, 3 authors, 2011-02-07

Re: Mixing 512 bytes and 4K sector harddrives in a raid1?

From: Roberto Spadim <hidden>
Date: 2011-02-07 15:07:39

speed problem =) (i tested eeheheh)
i was talking about it in this list
i don´t know yet what the internal raid1 sector size (i think it´s the
chuck size defined on mdadm --create, but i´m not sure)
if you use 4k ssd you can see read/write when making <4kb read on ssd,
if it's a hd no problem, ssd will degrade max ssd speed with wrong
sector size (read/write not aligned)
i'm waiting the chunck size answer if you want wait the list to answer...

2011/2/7 Henrik Olsson [off-list ref]:
Hi,

One of the drives in my raid1 recently crashed and it looks like all
the replacement disks (2TB) i can find use 4K sectors, but the old
ones were 512 bytes.
Are there any issues with having a raid1 array with different sector
sizes for the drives?

Regards,
Henrik
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-- 
Roberto Spadim
Spadim Technology / SPAEmpresarial
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