As provided by art. 6 para. 2 of EU Directive Directive 2014/49/EU, as recast, on deposit guarantee schemes: “2. In addition to paragraph 1, Member States shall ensure that the following deposits are protected above EUR100,000 for at least three months and no longer than 12 months after the amount has been credited or from the moment when such deposits become legally transferable:
(a) deposits resulting from real estate transactions relating to private residential properties;
(b) deposits that serve social purposes laid down in national law and are linked to particular life events of a depositor such as marriage, divorce, retirement, dismissal, redundancy, invalidity or death;
(c) deposits that serve purposes laid down in national law and are based on the payment of insurance benefits or compensation for criminal injuries or wrongful conviction.
https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32014L0049
So the Deposit Guarantee Scheme covers your deposit if it is above 100,000 for at least 3 months and up to 12 if it results from a transaction relating to a private residential property. You could check with the Central Bank that administers the DGS in Ireland on how long the maximum duration is in Ireland. Then make certain your deposit is lodged with a covered institution and is a protected deposit within the meaning of the DGS.