Informix on iSCSI
Neil Truby asked for thoughts on putting Informix chunks on an iSCSI device. Clive Eisen warned against low-end iSCSI arrays, and advised vendor-supplied drivers or supported HBAs (e.g. QLogic with current firmware), jumbo frame support at both ends, and not relying on Linux software iSCSI utilities, citing bad experience. No numeric performance criteria were given.
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That is, having the chunks on an iSCSI device. Any thoughts?
Neil Truby wrote: > That is, having the chunks on an iSCSI device. > > Any thoughts? Make sure it's not a toy iSCSI like a Dell AX100 -- Clive
"Clive Eisen" <clive@serendipita.com> wrote in message news:46cc5d2b$0$11440$db0fefd9@news.zen.co.uk... > Neil Truby wrote: >> That is, having the chunks on an iSCSI device. >> >> Any thoughts? > > Make sure it's not a toy iSCSI like a Dell AX100 What are the characteristics of a decent one then? Sub-10ms service times? Anything else to consider?
Neil Truby wrote: > "Clive Eisen" <clive@serendipita.com> wrote in message > news:46cc5d2b$0$11440$db0fefd9@news.zen.co.uk... >> Neil Truby wrote: >>> That is, having the chunks on an iSCSI device. >>> >>> Any thoughts? >> Make sure it's not a toy iSCSI like a Dell AX100 > > What are the characteristics of a decent one then? Sub-10ms service times? > Anything else to consider? > > Vendor supplied drivers or supported HBAs that do the iSCSI magic, and even then with say QLogic make sure you have the latest firmware. Oh and make sure whichever route you go, both ends support jumbo frames. do NOT rely on toyware^H^H^H^H^H^H^H^linux iscsi utilites (<fx> bitter bloody experience</fx>) -- Clive