Postgres Pro
Downloads
Home   >   mailing lists

Thread: SAN - Same array Master-Slave

SAN - Same array Master-Slave

From
"drum.lucas@gmail.com"
Date:
Hi all,

Currently, I have four servers:

  • 1 Master server
  • 1 Slave server (read-only)
  • 2 Slaves servers (hot_standby)

We're having I/O and size issue, currently running SATA disks.
So we'll need to change our disks to SAN.


Question:

Can I use the same SAN array to a Master and a Slave server?

Short example:
Inline images 1

Is that possible?

Cheers
Lucas
Attachment

Re: SAN - Same array Master-Slave

From
John R Pierce
Date:
On 4/17/2016 3:21 PM, drum.lucas@gmail.com wrote:
>
> Can I use the same SAN array to a Master and a Slave server?

as long as they are different logical volumes on the SAN, sure. of
course that SAN will be dealing with the IO load from both servers, and
the SAN itself could be a single point of failure, although a proper
enterprise SAN has a rather high reliability (5-9's is not uncommon for
EMC enterprise class hardware) as long as its all properly designed
(redundant switches, dual HBAs in each server, etc)





--
john r pierce, recycling bits in santa cruz