Direct throughput about 140MB/s
From: open-iscsi@googlegroups.com [mailto:open-iscsi@googlegroups.com] On
Behalf Of Lee Duncan
Sent: 26 October 2020 22:51
To: open-iscsi
Subject: Re: Slow iSCSI tape performance
On Oct 25, 2020, at 10:42 AM, David C. Partridge
wrote:
I believe
On Oct 25, 2020, at 10:42 AM, David C. Partridge
wrote:
>
> I believe that it’s something to do with stopping Windows (at the target)
> from sending TURs to the tape every 30s or so.
Okay, that makes sense. But that has nothing to do with open-iscsi, or even
iSCSI at all.
>
> Setting
>>> The Lee-Man schrieb am 25.10.2020 um 17:51 in
Nachricht <4ad354c3-5d6a-4b1f-b978-afee5d1219...@googlegroups.com>:
> I haven't heard about disabling TUR for iSCSI tape improvement. Even if
> true, I'm not sure how you'd do that. You'd need to modify your target IMHO
> to always reply "ready"
open-iscsi@googlegroups.com] On
Behalf Of The Lee-Man
Sent: 25 October 2020 16:51
To: open-iscsi
Subject: Re: Slow iSCSI tape performance
I haven't heard about disabling TUR for iSCSI tape improvement. Even if true,
I'm not sure how you'd do that. You'd need to modify your target IMHO to alway
I haven't heard about disabling TUR for iSCSI tape improvement. Even if
true, I'm not sure how you'd do that. You'd need to modify your target IMHO
to always reply "ready" for TUR. But TUR is used to clear some conditions
at the target, if present, so not sure about the semantics of ignoring
I've seen a report that disabling Test Unit Ready across the iSCSI link can
hugely improve performance of remote tape drives.
Is this something I do at the machine hosting the tape drive or at the
client?
Is it relevant to open iscsi?
Thanks
David
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